The Swees cases on eBay are very cheap and good quality for the price, and they come in a range of six colours. You can tell the Sweess covers by the pictures as they have the word Swees printed on the bottom right of the front screen.
Here you go, the cheapest on eBay.com
http://www.ebay.com/itm/New-Magnetic...R2nQI0wO1pI8dw