Really, really do your research on Paypal before using it for anything. Do a Google search to find some web sites and info on lawsuits against them. Paypal has been beefing up their security because of several problems with hackers getting in & taking funds. They still have a problem, though.
Another MAJOR issue for them has been the fake Paypal scammers that send email that looks extremely convincing. It directs the recipient to go to a clickable link to "verify account infrmation" or prevent their Paypal account from being closed. Of course, that link doesn't go to Paypal at all. If the recipient is fooled by the scam, they coiuld lose the money in their accounts.
If you just use Paypal for payment of alum dues and not for selling merchandise, you shold not have the problems with Paypal locking up your funds because of disputes over merchandise.
Also just take a look at
www.paypalwarning.com as well as
www.paypalsucks.com. Do your research and consider the options.
Good luck!