If you're a frugal shopper, your best bet is this O'Neill Tank. It's a terrific item, while not very pricey. Also check out this Moa Moa Tank. It's a product you'll love which also doesn't cost too much. You may also want to look at this Cropped Top. This item is not expensive either, but it will make a difference in your wardrobe.
If you can afford to spend a little more, look no further than this Daniel Cremieux Tank. This item doesn't cost a fortune, but definitely deserves a place in your wardrobe. It's also worth looking at this Karen Kane Tank. This piece is extremely popular and, just as importantly, not too pricey. And do check out this Tank! It's a very popular item and good value for money.