Not sure why that is a ripoff price? They are a tough grade due to distribution method and prone to scratching/edgeware. Do I think $800 is the right price? Probably not, but I don’t think $150 for it is fair either, I would buy them all day at $150 so if yours hits a 10, feel free to send me a PM to sell it for $150.
It’s just a rough price, obviously it is hard to value when there is no recent sales for it. I said $150 as that is what I would pay for it and the value in my eyes, obviously other people might pay a lot more.
There is also 11 PSA 10’s and 2 PSA 9’s which doesn’t suggest a huge quality issue either.