Select item from options or write the item name by yourself.
Options depends on the selected category.
You have to write the whole English name of an CS2 item, e.g. Sticker | North (Gold) | 2020 RMR
You can also paste the item market link of any commodity item into the input box. (From CS2, Dota 2, TF2,...)
e.g.
https://steamcommunity.com/market/listings/730/Sticker%20%7C%20North%20%28Gold%29%20%7C%202020%20RMR
or https://steamcommunity.com/market/listings/730/Sticker | North (Gold) | 2020 RMR
Unfortunately it's case sensitive and doesn't work with skins :/