Speedline Value

[Speeder37]

Posted this in the parts for sale. This is probably the better forum.
Have no idea what a fair price for these wheels are. Looking for a starting point. They are authentic Speedlines.

I recently purchased the attached 85 Turbo I am looking to get it back to a stock look regarding the wheels.
It presently has the 18 inch 3 piece Speedlines. I believe that they are 9.5 in the rear and 8.0 in the front.
Tires are mismatched from P.O.. Michelin sport in the front with 75% treat left. Sumitomo"s in the rear brand new. 285-30 in the rear and 225-40 in the front.
The way that things are looking, I might need to go 17 X 8 and 9 replica Fuchs.
My question is: What is the market for the Speedlines and tires?
Thanks for your help.
Regards,
Matt