Yeah, I just bought the Logic Games Bible a couple of weeks ago and I am flying through it, it's so addictive. It's by far the best source I've used so far and it's worth the 40 bucks. Buy it on Amazon.. its cheaper there.
If you buy it from the powerscore website, it's even cheaper! $64.99 on amazon versus $41.99 on powerscore.com. I don't know how much shipping costs, but I can't imagine it being so much that it's more than the price difference.