Seing just the boxes is charming ! The lettering/typography, the vintage look, the logo, etc. Because that's something I've never had the chance to see.
I read the description. The amp was in storage. OK. But, as I know pretty well how trade/business/marketing work, I would supect hidden defects. For being that long in storage ! That's only my opinion. I know it exists.
What's your opinion about the price ? Sure, if someone is willing to pay that much, both parts would be satisfied... That's how business works. You have to admit that the seller decides the price he wants because it's NOS. There is no reference to put a price. No more.
Overall, it's a wondeful half stack !