Which website should I buy iPhone 5 case from?

My sister bought a iPhone 5 recently, and next two weeks her birthday will be coming, I think that I can buy a iPhone case for her as a gift. I have searched on the store, but I can't find a cheap and stylish one, so I wanna buy online.

The following sites are interested me, and one is cheaper, one is more stylish, I confused which site I should choose, and what about their shipping time?
1)http://dx.com/
2)http://www.iphone5casestore.com/page/3

Ebay! They are not expensive and you can always find something you like! If they come from Hong Kong and stuff they are the cheapest but take a while to deliver. (Not too long) I love ebay!

They are 517, 074 results right now on eBay for "iPhone 5 case":

http://www.ebay.com/...&_from=R40

If somehow none of those suit you, you could go to ebuyersedge.com and set up a saved eBay search for "iPhone 5 case" or whatever would be best so that you get an e-mail when a match is listed on eBay. You can use the price, exclude word, etc.filters to narrow down the results that you receive in the e-mails.

If you happen to find one you want listed in auction format, use a sniping service such as hidbid.com to bid for you.It'll bid in the last few seconds, helping you to save money and avoid shill bidding.

They give you an approximate day that you should receive your item.

Http://getoffmycase.storenvy.com

They'll even help find what you're looking for if they don't carry it already. They have lotsa accessories too. Love this place!