I wouldn't trust any retailer website that doesn't give their address and a contact number, let alone one that wants nearly a grand off me. In the UK, businesses are legally required to show an address on their website if they are selling goods or services. For limited companies it must be the company registered address. For sole traders it's a bit more woolly and I believe they can get get away with a PO Box for example, but I'm not sure I'd chuck money at a company that only uses a PO Box address. I would have thought there would be similar laws in the US?