If you're after a thrifty option, you'll appreciate this La Fiorentina Scarf. It's a popular choice and a great investment. Another savvy option is this Sole Society Scarf. While the price is not too high, be sure that this piece will become a worthy addition to your wardrobe. You may also want to look at this Urban Originals Scarf. This item is not expensive either, but it will make a difference in your wardrobe.
For something in the middle of the price range, look no further than this Diane von Furstenberg Scarf. This item doesn't cost the earth, but absolutely invaluable in your wardrobe.
If you're not a thrifty type, then you absolutely must check out this Alexander McQueen Scarf. This piece seems expensive, but it's top quality.