I watched your video yesterday - was interesting. The fact it appears to expand so much inside was quite fascinating. Looks much bigger on the inside than the raw dimensions would suggest, and perfect for card games, and general entertainment.
I would say if you're the sort of person who does this fairly often then it would pay for itself very quickly. Also, as
@Mr H said in the video - the one he bought is over 20 years old. If he keeps it in the same condition then if/when he comes to sell it I doubt he'd lose any money on it, so it's not like you have to claw back that £2500 in weekends away.