What site at the moment can you buy/sell beancash? I assume what i see on coinmarketcap is incorrect right?
Coinmarketcap is useless for Bean ... it lists yobit with an unknown amount of volume due to the fact yobit's bean wallet has been broken for years.
Coingecko may give you a better picture -- and unfortunately it's not a pretty picture. And btcpop at least used to offer bean, not sure how much volume it has nowadays.