Garry's Mod Thinking about opening up a server

I'm thinking of opening up a server for Garry's Mod, since I think it could be fun and something to keep me occupied, the only problem is that I don't have any idea if people will join it or if I can afford the 10/month rent, I don't even really know how I should set up donations. Should I just put a paypal.me link where people can put donations with a message and in turn get VIP? Really confusing