Quoted from teekee:
Your Premium today is now worth about $5500. If you would have bought that BIBLE for $10,500 you would have gained value. Instead... you lose.
No one should be buying pinball machines as investments anyway really. Pinball has been a bit of an anomaly hobby because so many new people have started collecting, but pinball is a fungible tangible item that wears over time and people should not expect them to inflate over time. If you want to invest buy stocks, bonds, real estate, or put money into your own primary business.
A couple games here and there like BBB, Tron LE, and BIBLE are limited exceptions in how they had a value that shot up. Transformers, XMen, Avengers, TRS, have a value scale more in line with what people should expect. You open the box and use the item and its value will go down on the second hand market.