The most familiar use is competitor tracking: regularly checking a competitor's price, stock level, and product description on Amazon or Trendyol so you find out the moment something changes. It's not just price — image changes or description updates are also a meaningful competitive signal; if a competitor refreshed their product photos or added a feature to the description, you want to catch that early.
Regional pricing is another angle: the same product on the same marketplace can sell for a different price depending on the country, due to shipping cost, local tax, or campaign differences. Without looking from a real IP in different countries, you can't tell whether the price you see matches what a buyer in that country actually sees.
Finally there's customer-experience testing: if you want to check how a campaign, coupon code, or checkout flow looks from different regions — say, confirming a promotion is only active in certain countries — you can't see that without a real IP from that region. The same setup works for our price monitoring product too.