If you're in a thrifty mode, your best bet is this Shawl. It's a wonderful product, while not very expensive. In this price range, you can also look at this Minnie Rose Shawl. It's also a popular item and won't break the bank.
If you can afford to spend a little more, consider buying this Marc Jacobs Shawl. While the price is very reasonable, this product is an easy wardrobe update. It's also worth considering this Mackage Shawl. This piece is extremely popular and, just as importantly, not too pricey. And do check out this Shawl! It's a very popular item and good value for money.