If you're a bargain shopper, why not opt for these Betsey Johnson Tights. While the price is very reasonable, this piece is an easy wardrobe update. It's also worth taking a look at these BZR Tights. This item is extremely popular and, just as importantly, not too pricey.
If you're looking at it like an investment piece, then what you're looking for is these Gucci Tights. It's more expensive but worth your money.