If you're looking for an affordable item, your best bet is this Tommy Bahama Belt. It's a great item, while not very costly. Another strong contender for your wardrobe is this AMI Alexandre Mattiussi Belt. While the price of this piece is not too high, it will surely attract a lot of attention. You might also want to consider this Dondup Belt. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're looking for something in between pricewise, look no further than this Orciani Belt. This item doesn't cost too much, but absolutely invaluable in your wardrobe. Also consider this Lanvin Belt. It's an attractive option both price and quality-wise. Alternatively, opting for this Just Cavalli Belt is a savvy choice as well!
If you're not the one to skimp on clothes, then what you're looking for is this DSQUARED2 Belt. It's more expensive but worth your money. While you're at it, also have a look at this Dolce & Gabbana Belt. Yes, this item is expensive, but it does not mean it's not worth it. And how about the luxurious Versace Belt? Yolo, right?