If you're a frugal shopper, your best bet is this Botkier Crossbody. It's a great product, while not very costly. Another strong contender for your wardrobe is this Cole Haan Crossbody Bag. While the price of this item is not very high, it will definitely attract a lot of attention. You might also want to consider this Crossbody Bag. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're looking for a happy medium, we recommend checking out this Stuart Weitzman Crossbody. While the price is very reasonable, this product is an easy wardrobe update.