In my opinion, the beekeeper would definitely need to be 'buyer aware'.
My little actual dealings with them went OK, but I knew I was not getting what they claimed in their advert.
They were claiming that used litho printing plates were one millimetre thick! They changed their advert but it still indicated a thickness of half a millimetre, still about twice the actual! I would dare to say they likely had a thousand of these, possibly only hundreds, but a thousand at one mm would be a pile one
metre deep! The deal still marginally cheaper than travelling to pick some up, so fair value. But downright misleading advertising. Either by I diots or 'wide boys' conning by claiming whatever they could get away with.
I would be particularly careful if buying hive parts by mail order (not seeing exactly what you are getting) and, personally, would not buy a nuc from them at any price.
Recycling materials may be a good thing, but I like value for money.
I have the emails copied, to back up my opinion, somewhere on an old computer drive, but finding them might take some time as it has been a while since any dealings with them.