I'd love to know. I think "the sellers" are "Q" . Who did "Q" get them from? Commenters on the product page have claimed that it is a 2020 model and brand new. IF they are brand new, where have they been sitting for the better part of 3 years? Wonder if they'd qualify for Apple Care?
Of note, Q is also selling 24" iMacs with the M1 Chip. These have been succeeded by the M3 Chip. The ones they are selling have an older Operating System. Again, where have these computers been sitting and are they new or refurbished?
This is why I buy Apple products only from the website or an Apple Retail Store, or an Apple Reseller.