How much money should I bring with me to Spain?

Cost, with the current exchange rate, is a bit higher than things in the US. You can expect to pay about 10€ for a sit-down lunch, but it's possible to eat more cheaply...I'd figure about $15/day or $150 for lunches, and another $5 or so for snacks. The rest is up to you...we found t-shirts around 10 - 15€ or so. Other souvenirs? Well, it's up to you. You can pay 100€ for a Mallorcan pearl (bead) necklace, but are you interested in that? about 3 - 5€ for a deck of cards or magnets, key chains, etc., 10€ or so for coffee mugs, etc. It really depends what you think you want to buy. You might want to bring home some unusual foods, but check with your teacher/guide to find out what's legal to transport, and what's safe. Obviously, if it's something that needs to be refrigerated, you don't want to spend a whole day with it in your suitcase! Oh! take photos. TONS of them. Ten years from now, you will only be able to remember what's in the photos, and a couple of stories...everything you don't photograph will have faded pretty seriously!

Don't take too much amount money with and also don't take less amount. Take money as per your need, but take atleast minimum requirement of money. If you like shopping then plan your expenses and take money as per your need. I think $700 would be good figure.