If you're a thrifty shopper, your best bet is this Roxy Backpack. It's a great product, while not very pricey. Another savvy option is this Herschel Backpack. While the price is rather reasonable, be sure that this item will become a worthy addition to your wardrobe. Or you can opt for this JanSport Rucksack. This item has all the potential to become a powerful player in your wardrobe.
If you're after a bargain, you're in luck with this Tumi Backpack in stock and waiting for you. You are guaranteed to fall in love with this product.