Maybe not a scam but for sure taking advantage of a situation. On Tuesday  May 7 I pulled the trigger and got a Bitmain Antminer S17 Pro-53TH/s Bitcoin Miner (Shipping April 20 - May 4th). It said in stock so I ordered it, paid Bitcoin. Sent BTC 0.53701226. Order was processing a few days with no update, I emailed them On Friday May 10 requesting an update and their answer back was Bitmain was being cagy with their order and would let me know on Monday. So now extending out this processes, I am really starting to think I am being scammed. We were enjoying a nice BitCoin run and the value was rising. I get an email from them Tuesday May 14, now a week after they accepted my Bitcoin for a product they did not have and know they might not get while Bitcoin is going up and up. So they now inform me that they will send me back BTC 0.37097. So I just paid them $1200 to hold on to my Bitcoin for a week. That's a pretty high handling rate. Just know that if you pay Bitcoin with these retailers they do not have to be honest and upfront with you and WILL accept money for items that they do not have in stock. I hope this helps someone in the future.