Ha, forget the twenty bucks, save it for something useful. My Yahoo account is only good for spam and account details for useless forums I don't go to very often (not this one, of course). If anyone wants a gmail invite, give me a PM with a valid email address and I will send you one out. Either that or sign yourself up for a gmail account - it's fast to set up, both on the web and for a POP3 account.
Shame about the US not getting free POP3 access, but thems' the breaks.