Wow! Offer on my Cuda

Honestly, I would have called him on that.
This happened to me once about 20 years ago.
A guy driving by my place stopped and asked to look at my car, and i said sure.
Then he asked if it was for sale, and i said not really, he said shoot a number at me.......so i said okay, and gave him a number that was at the time, almost double what it was worth in the going market.
He said, okay, i'll be here next weekend with the cash. I thought to myself, yeah right.........
Lo and behold, next Saturday he showed up with cash and didn't dicker at all. The car was gone in a 1/2 hour after we did the paperwork.
Do i regret selling it? Not really.
He restored it and still has it to this day, and loves the car.
The car was a '69 Coronet R/T, red with white interior and a black vinyl top and tail stripe, 440 4 speed, non console, 3:54 Dana, magnum 500 wheels, ramcharger hood, charger dash, std steering and brakes with 11'' drums all around. It was matching numbers everything except for the trans case and bone stock.
It was a great driver, and had a little bit of rust in the lower quarter panels at the back, and had 90% original paint.
It's worth about 3 times what he paid for it by today's standards if you worry about a stupid thing like money.

Bottom line is, it either is or isn't for sale.........regardless of the offer.
That is something that you need to figure out personally.
If you agree to a price, be prepared to follow through.
It's surprising what some people will offer and that they actually have access to that kind of money.
I've seen people that professed that they were broke and living on ramen noodles pull 15 grand out of their *** for a crate Hemi at the drop of a hat.
So, you never know........