I've watched a few returns pallet videos recently, Grace really did get a dud. A family channel recently did one and they got 15 or more mini fridges, broken ornaments, broken toys. Then I've seen a smaller youtuber buy 2 at over 1k and she got Dyson hair products, shark vacuums, smeg toasters, nespresso machines etc.
It really is pot luck.
My theory is Grace saw the photo and kept bidding because she doesn't like 'losing' and therefore paid over the odds. She will make her money back on the video and because it was shown as a purchase for work, she will claim her tax back on it.