We had tapas in many places in Spain. The best (not the cheapest) place was a market next to Plaza Mayor in Madrid. They had so many vendors selling different kinds of tapas, it was impossible not to drain your wallet there.
1. The market next to Plaza Mayor in Madrid.

2. The most tempting counter in the market. I think we spent at least 50 euros in this counter alone!

3.

4. Galician Barnacles. I remember Bizarre Foods with Andrew Zimmern featured this in one of their episodes. Probably should have tried it.

5. This was our favorite tapas (12 euros).

6. Snails (8 euros), eat with those pins. It was o.k.

7.

8.

9. It looked so good.

10. I think this was 15 euros. It was good.

11. Their menu if you can read Spanish. We couldn't. So we just pointed, paid, and ate.

P.S. 1 euro was about 1.46 USD in Apr. 2011.