We started collecting data several years ago for our own use. We even managed to use a variety of archival sources to gather data on sales at auctions dating back to 2012. This data allows us to create a better overview of long-term developments in prices.
There are really a lot of e-shops that sell alcohol, and each one has to go through manual approval for proper inclusion in the system. If we are missing an e-shop, please send it to us via the "Add e-shop" function and we will add it as soon we can.
We gather data from hundreds of e-shops. You can see the current number of e-shops, after logging in to the application, at the bottom, or in the "Stores" section, where you can also search for specific e-shops.