OK guy i asking this when people Donate on buycraft where money go? On payment or server hosting? Lol I don't really know about buycraft cuz this First time use plugin buycraft that why i asking sorry bad English
BuyCraft allows you to add your own payment gateways, ex: Link a PayPal or similar account, which will be used when somebody makes a transaction there. You'll probably get a better explanation if you ask them yourself. There are multiple ways you can contact them.