I dunno if you like this idea but I thought it would be handy if you have a friend with no bits. Keep the whole bits paying system but also add a buying for others with your bits like example /get (name here) (id) (and how many you want)
You can already give people bits but I mean for people who don't know and who are to lazy or are in a situation where you need to be quick so you can just but it for them.