If you are on a limited budget, your best bet is this Frame Belt. It's a wonderful product, while not very pricey. Another smart option is this J.Crew Belt. While the price is rather reasonable, be sure that this product will become a wonderful addition to your wardrobe. You may also want to look at this Etoile Isabel Marant Belt. 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 Waist Belt. This item doesn't cost the earth, but absolutely deserves a spot in your wardrobe. It is also worth taking a look at this Miu Miu Waist Belt. It's an attractive option both price and quality-wise. Check out this Isabel Marant Waist Belt too! Great value for your money.