As most of us gamers know, graphics cards prices (especially AMD brand) are currently very high due to ethereum cryptocurrency mining craze. Big mining "farms" are buying out almost all of the RX 570/580 cards which has inflated their price by a 100 € or more in Europe. I've looked on Amazon and can't find any decent price for these cards ( MSRP of 4 GB RX 570 should be around 180 - 200 $ I think). Any recommendation for an online store where you could buy these cards cheaper, and would you buy a used one if you knew it was used for mining ?