LimeWire Basic is free. It's available at the official site:
http://www.limewire.com/english/content/download.shtml. There's also a Pro version available for $18.88US.
It sounds like you may have been scammed. You should try to get your money back, also keep an eye on the account you used to purchase it with cause they may continue to charge you a subscription fee or for other software you didn't want.
See these threads:
get your $$$ BACK!!!(music members) Membership? - **WARNING ** BEWARE** - Download p2p Clients ONLY Thru Official Sites