If you're a thrifty spender, your best bet is this Missguided Cropped Top. It's a terrific product, while not very expensive. Another strong contender for your wardrobe is this Topshop Cropped Top. While the price of this piece is rather reasonable, it will surely attract a lot of attention. You may also want to look at this ASTR Cropped Top. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking for a happy medium, look no further than this Opening Ceremony Cropped Top. This item doesn't cost a fortune, but absolutely indispensable in your wardrobe.