Your only option is to just wait it out till mp3car store has them in.
I need one by late May. Mp3car.com doesn't have them in stock. The others dealers listed on Carnetix.com: Digitalww.com takes my money, doesn't ship my products, won't answer my emails. CappucchinoPC.com has a constant busy signal on their phoneline and doesn't list the product on their website. Xenarc says they no longer sell the Carnetix line of products.
Well, it looks like LinITX in the United Kingdom is the only source for these things. Their website indicated they had 35 of them. No wonder there are none in the United States!
It's going to cost me more than double, but it should arrive in about one week