I was looking through the editing guide availability section (https://pcgamingwiki.com/wiki/PCGamingWiki:Editing_guide/Availability) and i seen that the product ids table is missing some stores you can buy games from.
Here is a list of other places you can buy games that I believe should be added (I am using Lego Marvel Super Heroes 2 as an example):
2Game - https://2game.com/us/legor-marvel-super-heroes-2-standard-edition
Voidu - https://www.voidu.com/en/lego-marvel-super-heroes-2
Fanatical - https://www.fanatical.com/en/game/lego-marvel-super-heroes-2-game
Nuuvem - https://www.nuuvem.com/item/lego-marvel-super-heroes-2
Razer Game Store - https://us.gamestore.razer.com/games/action/lego-marvel-super-heroes-2-824850.html