Not sure if you are asking for one sold in a retail setting or on the private market. If you are asking about a collectable I suspect one of the prototypes would have fetched the best price. I think I saw that one, which was never released to the market, was sold at auction for a lot of money but I can't remember the going price.
Edited....
If you are talking about the $72,000 pink Rear Loading Beach Bomb, yes, that is the most paid for Hot Wheels piece. It was a Pre-Production piece thought to be the only one made in Pink. It was bought at auction buy Collector Bruce Pascal in 2001.
This Rear Loading Beach Bomb is currently for sale at the asking price of $150,000.
Now the next piece in not a so-called production piece. It is more of a promotion piece than anything else.
"In 2008, Mattel wanted to prove just how big the Hot Wheels brand had become. So, they commissioned celebrity jeweler Jason Arasheben of Jason of Beverly Hills to create a one-of-a-kind Hot Wheels car to help them celebrate their 40th anniversary. It featured 2,702 multicolored diamonds, took more than 600 hours to produce, and was auctioned off for $140,000."
With that said, I would allow you to take your pick as to what the most expensive Hot Wheels ever made is.
The wheel.
the wheel.
The wheel
The one who has the most money
Taxes.
Antilla is most expansive house of the world.
This is an opinion question which has been argued over a lot. Some think it's the wheel, others say something medicinal.
The Earth's mantle comprises the bulk of the Earth.
The most horrific movie ever made is "Paranormal Activity 2".
most likely bad balljoints
The most powerful bomb ever made was the tsar bomb.
rock doesn't contains expansive soil. Expansive soils are soils that expand when water is added, and shrink when they dry out. This continuous change in soil volume can cause homes built on this soil to move unevenly and crack.