If you're looking for something in between pricewise, look at this Moschino Waist Belt. While the price is very reasonable, this item is an easy wardrobe update. It's also worth looking at this Maje Belt. This item is extremely popular and, just as importantly, not too pricey.
If you're in a Treat Yo' Self mood, then you absolutely must check out this Vionnet Waist Belt. This item seems pricey, but it's top quality.