I had some nasty things to say about SF planet earlier, but I take them all back now. I ordered the Seidio Active series with the holster for all of just over $30, and it came in perfect condition. I confirmed with Seidio that they honor SF Planet as a reseller, and if there are warranty issues, they'll cover them.
I'll be purchasing from them again, for sure. I would confirm with the company making the cases first, if you are concerned about a warranty issue. But for the price, you are saving a TON.
Just a note, if you are Canadian, order from their eBay store. The shipping is far, far cheaper.