If you're budget-restricted, your best bet is these Leggings. It's a wonderful item, while not very expensive. Another good option is these Splendid Leggings. While the price is not too high, be sure that this piece will become a wonderful addition to your wardrobe. You might also want to consider these Jo-Jo Leggings. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're looking for an item in the middle of the price range, why not take a look at these Sweet Heart Rose Leggings. While the price is very reasonable, this item is an easy wardrobe update.