future value of classic performance cars,when to bail out, before the crash?

Those that like to get their hands dirty work to keep the cost /price down.
Those that dont like to get their hands dirty drive the price up.

Peaks and valleys. I agree.
Its more like saturation points.
Those that have and want more, buy.
Then they are done spending.

Next crowd moves in and repeats.

Just like the shops,busy, so busy theres no end. Followed by a dry spell.