BUFF163 is a Steam marketplace specializing in CS:GO skins and items. It is a peer-to-peer (P2P) marketplace. This means that an item sold on BUFF163 is traded directly from the seller’s Steam inventory to the buyer’s Steam inventory.  Because sellers do not need to deposit skins to a single marketplace, they can list their items on multiple marketplaces at the same time.

This Chrome extension allows you to convert currencies on buff.163.com with ease. All you need to do is install this extension then select the currency you want to convert to by clicking the Buff Currency icon in the extensions bar.