Haha, yes, they really pay :p
To tell you the truth, I was rather surprised. Most sites have you work to get up to a certain amount, and then pay you when they're good and ready.
Not GPTreasure. For me it's always within a day/day and a half.
The US offers aren't bad at all, and I love how the admin tells you exactly what steps you need to take to complete the offer.
(He's also very friendly to talk to, and willing to go the extra mile for his users. I remember a post before where he actually completed one of the offers w/ his cell phone, just to confirm that it worked. Would any other site do that? I think not.)