Nance and Halibrand Magnesium wheels

I have 6 mag wheels from Nance and Halibrand. I know they are worth decent money but not sure where to start on pricing them. Any ideas ?

 

I have paid $400.00 and $500.00 for Halibrand 6 pins 20 years ago. Now I see guys asking $1,000.00 . I paid $1,000.00 for FOUR perfect Nance wheels [ 12 years ago ] for my next project with K O 's. 32 roadster. I paid $1,000.00 for the FOUR PERFECT Halibrand wheels on my 27. Five Ken's Equipment aluminum wheels. $300.00 each. My friend said that was too much for aluminum wheels.