On xmldatafeed, you can purchase ready-made databases from various stores or order a custom database based on individual criteria. I haven't tried the second option yet (plus it's expensive), so I only buy ready-made databases. The catalog features all the well-known stores – M.Video, Eldorado, DNS, Ulmart, and others. They are grouped by categories, which makes it easier to download the necessary information. Prices vary depending on the size of the database and the number of stores. Some databases can be bought for 200 rubles, while others cost up to 4,000 rubles. I collect databases for my clients. Last time, I purchased a complete database of online stores across Russia for 9,700 rubles. It contains 50,000 websites, and we used them for sending commercial offers. The database is of high quality, all emails are valid, and fake companies are excluded.
