Pinecone Research is accepting new members right now. They pay $3 per survey and you are paid after each survey. You don't need to wait to reach a certain amount. I've been with them for almost a year now and always receive my checks within the same week of completing surveys. They also pay via Paypal.
Pinecone is usually invitation only and is not as easy to be accepted as other survey sites, but it is definitely worth it. Once in awhile, they will open up their sign-ups list.
Sign-ups fill up quickly!
They are 1 of the top 10 survey sites. Check out their ratings on surveypolice.com.