Mac-Res-Q has an unbelievable good deal right now on FileMaker Pro 6. They are selling full copies without a user manual or box (just the CD and installation codes) for $79.99!!! Lots of places you go, you'll be asked to pay $299 per copy.
Get your copies now if you don't plan on upgrading to FileMaker 7 right away. Even if you do, this is an incredible opportunity to expand the number of seats of FileMaker you have. They have both Mac and Windows versions. Go get it if you need it.
By the way, I'm not making a penny on this link. It's just an amazing deal, plain and simple.