12 months will cost you $34.95 USD & 6 months costs $24.95 now.

Can I just make a suggestion? Before you go buying Pro, try the latest basic (free) version There have been heaps of changes since 4.10.5! Use the basic version for a while...once you're happy with how basic LW's running, then think about buying Pro. You might find that you're just as happy with the free version

Here's the changelog, so you can see what's changed in LW.
Lime Wire » Features History

If you do decide to buy Pro, save & back up your Pro installers!! Also, bookmark your Pro download page.

The only official site for downloading either version is Lime Wire » Official Website & Free Download, BitTorrent «