It all depends on which datasets you have available, Soham. For example, Black Friday just happened and I saw a lot of articles about how some shops were gaming the system raising prices in the weeks before Black Friday so they could advertise a discounted price afterwards. I saw some sites keeping track of price changes for some merchants. You could potentially crawl daily data of products you want to track, and store in QuestDB. You could add columns for brand, vendor, category, and even local website (for large websites with presence in multiple countries with different prices on each). Then you could use QuestDB to show trends and historical data