I am not sure of this, but I would also check out that if you end up buying from a third party you may not have the protection that you have using a credit card, or buying from the actual vendor. I am extremely distrustful of anything these days, which is a shame that you have to live like that, and yes lets have GN's with knowledge lawyers, trade description people , giving us the lowdown and then give warnings .
I am just listening to a radio 4 programme , which is discussing using QR codes and all the various scams going on , with such as bogus car park paying things. But now they are talking about yet another scam that you need to watch out so that you are asked to pay a 0 pence , but that is then used to get your details and take money from your bank and once they have your details they can take amounts that you may not immediately see as a scam. I am sure that the great GN population to pass on anything they learn. I do have a credit card and will use it in places that I am satisfied to trust. But I am that oldfashioned person, that you see in the cafe or new restaurant paying with cash, yes real money. Fingers crossed , I am keeping myself away from all these scammers, but these b-----d's find even more ways to con us all. More power to GN's contacts to help to keep us safe.