Piffle on spending $8k for a bass!
Here's my line of thought when it comes to basses:
No way would I pay over $800 for a NEW one. On the other hand, if I have the money, an OLD bass that I want is worth WHATEVER the market price is plus a small premium.
I'll always be able to recoup the market price and the premium is worth the pleasure of owning it...why not buy something I want if I have the money?
Of course I already own a pair of '64s. And judging by the currently escalating prices they'll be worth more than I paid for them if/when I decide to sell. If not it still won't reduce the joy they've brought me.
Those unbought new basses will generally be worth slightly more than half what they cost new, disregarding inflation.
If you play a GOOD example of an old bass and compare it side by side to a new "Reissue" you might understand why someone would pay 4 times the street price of a new one for it.
Don't get me started on the relatively sound investment of vintage basses vs vintage cars and motorcycles!