Based off of the prices for individual boxes that you provided, the seller does not appear to be asking for much of a premium. That comes out to $700 per box.
Yeah sorry for mis-wording, I’m not really looking to pay market for 10x starter decks. I don’t know much about the product, but if I can end up paying $6k and get premium on a resale for the box still being sealed, I’m just curious if it even brings a premium on the wider market. This was a local listing
Just curious, but if the box is priced according to the individual listings I wouldnt see a seller losing out on 1k, and lowering their offer. Most, if not all sealed items that are out of print will get a premium, but its value should hardly ever be less than that of the individual items that make it up. Im not sure if you were expecting a different answer though. Offer them 6k and see what happens, but finding a seller who wants this may take some time.