BossAve.com sells OEM (no brand) head units. I don't see anything wrong with this. You can also choose to pay another $500 for the same product but with a shining brand name.Holy carp what a bunch of pop ups on that site .
Coles Notes: Its a scam, they send a POS , tell you to return it then ignore you. You're out money for the unit and returns.
Welcome to Chinese business where ripping off the westerners is considered good business. I used to work for Foreign Affairs and wanted to do some importing myself. A friend had been stationed in China for several years so I picked his brain. He basically said not only is this common place but when a Non-Chinese person turns up at the factory, the price instantly goes up 5x. Oh well, we used them to build the railroads and now its payback.
Back OT, if you want a deck for a cheap price I'd suggest just buying a brand name refurb. At least you know what you're getting.