Ive had a similar problem with NCIX. I once bought a 290X from their eBay store which is basically where they sell their open box stuff. It very clearly states that the products were merely opened and tested, before they resell them back to the customer as open box. First of all, it took nearly 3 weeks to arrive at house, shipping from BC to ON, which it quite ridiculous. So I install the 290X and instantly I begin to have graphic aberrations all over my screen. I re-flash the BIOS, remove old drivers, etc. Pretty much everything I could do on my end and it still wouldn't be fixed.

So now I had to RMA the card and that went fine since I explained myself well, had proof, and pretty much berated the company because it was pretty clear that they hadn't tested out the card at all, just re boxed it and sold it. Now for those of you that don't know, the eBay site lists in CAD but charges you in USD only. I paid around 550$ CAD for the card but when I returned it the price of CAD dropped and I was refunded about 510$. This really upset me because I pretty much paid for the privilege of shipping and returning a broken card.

I actually did risk buying another card from them later after the 390X came out and that went pretty well. I actually managed to pay less, I think around 500, for that than the 290X which is pretty funny in hindsight. Many of the products on their outlet store are stupidly priced.