https://www.g2a.com/en/silent-hunter...0000047977001/
https://www.gamesrocket.com/silent-h...-edition.html/
https://www.amazon.com/Silent-Hunter.../dp/B003BVIXWW
http://store.steampowered.com/app/48..._the_Atlantic/
Which one will you chose, the Steam version maybe? You must be a uncurable Steamkoholik then...If really you want to buy on Steam, then get SH3 for $1.69, it has far less problems to mod correctly and you can play with all sub types.