While I would never pay $2500 for any vacuum tube, how about $1.29 Million for a hockey card! Talk about lunacy, to those spending that kind of money as an investment, I hope that you loose your shirt!
https://theathletic.com/news/wayne-gretzky-rookie-card-o-pee-chee/1jM2X6o82lCJ
https://theathletic.com/news/wayne-gretzky-rookie-card-o-pee-chee/1jM2X6o82lCJ