My husband fell for one of these some years ago, I think it was for an ipad, they were fairly new, and like you said there was massive demand, and everybody wanted one. Along comes this website called "just new in" or something like that, offering Ipads for a pretty substantial saving but still, pretty damned costly! Off he went and got his credit card. I gave him the usual "if it sounds too good to be true, it is too good to be true speil" and he said "It looks pretty legit to me". He popped one into his basket and proceeded to fill out his details - It asked for his mother's maiden name fgs! I was told this when he'd already clicked on send but suddenly come to his senses and said "WTF have I just done?" "What an *****!". Within a couple of minutes he was on the phone to his credit card company and told them "I've just done something really stupid - Is there anything you can do?" Thankfully they were able to stop the transaction immediately, stop the card and order a replacement. We still talk about that incident to this day - thankfully no harm was done - but you can't hear wiser words than "If it sounds too good to be true - It is too good to be true"!A very famous scam which has popped up on the Moneysaving site again this year.
Without fail each year, threads appear about buying a IPad, Xbox or some other electronic everyone wants. Of course sold out massive demand and the stores cannot get the stock to meet demand. So these websites pop up saying guaranteed delivery before Xmas and also a good price(the last one is the bait), people just buy and delivery is usually 10 days and usually a set date when item will arrive. Of course, it never does and the website disappears. These scammers even put up fake reviews on Trustpilot making them seem okay. It is only when the time has passed and no items the real reviews start.
I remember last year, I think it was an Iphone? But this man posted and kept insisting his would turn up, he was given different dates when that date his was due and did not arrive. Quite a few others who must have googled came on to the thread saying they had the same experience and admitted it was a scam. But he just knew his would arrive. No.