If you're after a thrifty option, this Nordstrom Scarf will fit the bill. It's a foolproof choice, while not very expensive. Also take a look at this Scarf. It's a product you'll fall in love with which also doesn't cost the earth. You might also want to consider this H&M Scarf. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're looking for a bargain, look at this Kate Spade Scarf. While the price is very reasonable, this piece is an easy wardrobe update. It's also worth considering this Club Monaco Scarf. This piece is ultra popular and, just as importantly, not very expensive. And do check out this Polo Ralph Lauren Scarf! It's a very popular item and good value for money.