If you're on a thrifty budget, why not take a look at this Topshop Mini Skirt. It's a terrific piece for a good price. It is also worth taking a look at this Missguided Mini Skirt. It's an item you'll fall in love with which also doesn't cost the earth. You might also want to consider this Asos Mini Skirt. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're looking at it like an investment piece, then you won't be disappointed if you check out this No.21 Mini Skirt. It's an expensive but smart option.