Online prices change far more often than most businesses check them. In a PriceRest study of 522,878 daily prices from 261 online stores and marketplaces in 24 countries, 46% of products changed price at least once within 30 days, and products that changed did so about every 6 days. 56% of price cuts were reversed within 14 days, and one in three price changes was smaller than 5%.
Key findings
- 46% of online products changed price at least once in 30 days, and 23% changed price three times or more.
- For products that changed price more than once, the typical gap between two changes was 6 days.
- Price increases and price cuts were almost equally common: 49% of all changes were increases and 51% were cuts.
- The median price change was 10%. One in three changes (32%) was smaller than 5%, and one in three (33%) was larger than 20%.
- 56% of price cuts were reversed within 14 days, which means most discounts are temporary promotions rather than new price levels.
- At stores that show a crossed-out price, 43% of products were discounted at least once in 90 days, with a median discount of 20%.
- 20% of products went out of stock at least once in 90 days.
- Marketplace prices moved in small steps (median 4.6%), while online stores moved in large, promotion-driven jumps (median 20%).
- Beauty was the most volatile category: 65% of beauty products changed price within 30 days, typically every 4.5 days.
Findings
How often do online prices change?
Almost half of all online products change price every month. In the PriceRest data, 46% of products changed price at least once within 30 days, 23% changed three times or more, and the average product changed price 1.6 times per 30 days.
Number of price changes per product in 30 days
Products with at least 25 daily price observations in the last 30 days of the study (8,989 products).
Products that change price tend to keep changing. For products with more than one price change, the typical gap between two changes was 6 days. In other words, a competitor price you checked last week has a good chance of already being out of date.
How big are online price changes?
The median online price change was 10%. Changes split into three almost equal groups: 32% were smaller than 5%, 35% were between 5% and 20%, and 33% were larger than 20%.
Size of price changes
The small changes matter most for monitoring. A 2% or 3% move is easy to miss when prices are checked by hand, yet it can be enough to change who is the cheapest seller for a product.
Are prices going up or down?
Both, almost equally. 49% of all price changes in the study were increases and 51% were cuts, and the median increase and the median cut were both about 10%. Online prices move in both directions all the time, not in one steady trend.
This is why a single snapshot of competitor prices is not enough. A competitor that is cheaper today may be more expensive next week, and the reverse.
How long do online discounts last?
Most online discounts are short. 56% of price cuts were reversed within 14 days, meaning the price went back to its previous level or higher. At stores that show a crossed-out price, 43% of products were discounted at least once in 90 days, with a median discount of 20%.
| Discount metric | Result |
|---|---|
| Price cuts reversed within 14 days | 56% |
| Products discounted at least once in 90 days | 43% |
| Days on which a product showed a crossed-out price | 20% |
| Median discount versus the crossed-out price | 20% |
Discount metrics use only stores and marketplaces that display a crossed-out (list) price next to the selling price.
How often do products go out of stock?
20% of products went out of stock at least once during the 90-day study, and on an average day 4% of tracked products were out of stock. Stock matters for pricing: a cheaper competitor that is out of stock is not taking your sales.
Breakdowns
Marketplaces vs online stores
Marketplaces and independent online stores change prices about as often, but in very different ways.
| Marketplaces | Online stores | |
|---|---|---|
| Sites in the sample | 18 | 243 |
| Changed price within 30 days | 45% | 49% |
| Changed price 3+ times in 30 days | 18% | 28% |
| Median price change | 4.6% | 20% |
| Changes smaller than 5% | 52% | 19% |
| Price cuts reversed within 14 days | 46% | 62% |
| Products discounted at least once in 90 days | 29% | 66% |
| Median discount | 10% | 25% |
| Products out of stock at least once in 90 days | 13% | 28% |
On marketplaces, many sellers compete on the same listing, so prices move in small steps: more than half of marketplace price changes were under 5%. Online stores change prices less gradually, through promotions that start and end, which is why two thirds of their products were discounted at least once and most of those discounts were reversed within two weeks.
Differences by region and category
| Segment | Sites | Changed price within 30 days | Median change | Discounted at least once in 90 days |
|---|---|---|---|---|
| Latin America | 43 | 56% | 20% | 71% |
| Türkiye | 83 | 49% | 6% | 37% |
| Europe | 31 | 27% | 12% | n/a |
| Beauty and cosmetics (all regions) | 31 | 65% | 25% | 78% |
| All sites | 261 | 46% | 10% | 43% |
Regions are shown only where the sample has enough products and sites. For Europe, too few stores display a crossed-out price to report a discount rate.
Beauty and cosmetics stood out. Among beauty products that changed price, the typical gap between changes was 4.5 days, 43% changed three times or more within 30 days, and 78% were discounted at least once in 90 days, with a median discount of 30%. Beauty retailers run frequent, deep and short promotions, which makes the category especially hard to follow without automated monitoring.
Takeaways
What this means for price monitoring
Five practical conclusions from the data.
- Check prices daily, not weekly. With a typical 6-day gap between changes and most discounts ending within two weeks, a weekly check misses a large part of what competitors do.
- Do not chase every price cut. More than half of price cuts are reversed within 14 days. Matching each one permanently gives away margin to promotions that end on their own.
- Watch the small changes. One in three changes is under 5%, and on marketplaces more than half are. These are the moves that decide the cheapest seller and the ones a manual check is most likely to miss.
- Track stock together with price. One in five products goes out of stock at least once in 90 days, and an out-of-stock competitor should not set your price.
- Monitor marketplaces and online stores differently. Marketplaces need frequent checks for small moves; online stores need alerts for promotions that start and end.
For more on choosing check frequency, coverage and tools, see 15 questions buyers ask before choosing price monitoring software and how PriceRest monitors prices in 64 countries.
Methodology
Methodology
- Data source. Daily price observations collected by PriceRest crawlers from public product pages of online stores and marketplaces.
- Period. 90 days, from July 8 to October 6, 2026.
- Sample. A random sample of products tracked on the PriceRest platform, giving 10,767 product listings at 261 online stores and marketplaces in 24 countries: Türkiye, Peru, the United Kingdom, Colombia, Chile, Mexico, the United States, Guatemala, Poland, Bolivia, El Salvador, Costa Rica, Ecuador, the Dominican Republic, Czechia, Panama, Germany, Australia, Lithuania, Greece, Canada, Slovakia, France and Spain. The sample reflects the products PriceRest customers track, so it is not weighted to represent each country equally.
- Observations. 522,878 daily prices. A listing was included only if it had at least 30 daily price observations in the period. Each listing was counted once, even if several customers tracked it.
- Price change. A change of at least 0.5% between two consecutive daily observations no more than 3 days apart. Prices were compared in the currency the store displays, so exchange rate movements are not counted as price changes.
- Noise filters. Changes larger than 5x in one day were treated as data errors and excluded. A one-day jump that returned to the same price the next day was treated as a possible collection error and excluded, so the change counts are conservative.
- Reversed price cut. A price cut after which the price returned to its previous level or higher within 14 days.
- Discounts. A day on which the selling price was at least 5% below the crossed-out list price shown on the page, measured only at stores that display a list price.
- Out of stock. A day on which the page showed the product as unavailable. Days on which a listing was removed or the page could not be reached were excluded.
- Excluded sites. Price comparison websites and product information platforms, because they do not sell products themselves.
- Privacy. All results are aggregated. No customer, product or individual store data is published.
How to cite this study
PriceRest (2026). How Often Do Online Prices Change? 2026 Data from 261 Online Stores in 24 Countries. https://www.pricerest.com/how-often-do-online-prices-change/
FAQ
Frequently asked questions
How often do online prices change?
According to a 2026 PriceRest study of 261 online stores and marketplaces in 24 countries, 46% of online products changed price at least once within 30 days. Products that changed price did so about every 6 days, and 23% of products changed price three times or more in a month.
How long do online discounts usually last?
Most online discounts are short. In the PriceRest study, 56% of price cuts were reversed within 14 days. At stores that show a crossed-out price, 43% of products were discounted at least once in 90 days, and the median discount was 20%.
How big is a typical online price change?
The median online price change in the PriceRest study was 10%. About one in three changes was smaller than 5%, one in three was between 5% and 20%, and one in three was larger than 20%.
Do marketplace prices change more often than online store prices?
Marketplaces and online stores change prices about as often, but differently. Marketplace prices moved in small steps with a median change of 4.6%, while online stores moved in larger promotional jumps with a median change of 20% and discounted 66% of products at least once in 90 days.
Which product category changes prices most often?
Beauty and cosmetics was the most volatile category in the PriceRest study. 65% of beauty products changed price within 30 days, products that changed did so about every 4.5 days, and 78% were discounted at least once in 90 days.
How often do online products go out of stock?
In the PriceRest study, 20% of online products went out of stock at least once during a 90-day period, and on an average day 4% of tracked products were out of stock.
How often should you check competitor prices?
Daily. Products that change price typically do so every 6 days, and more than half of price cuts end within 14 days, so a weekly check misses many changes. Fast-moving categories such as beauty and busy marketplaces can justify several checks a day.
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