help with some part priceing

I am selling these parts for my cuz who was building an engine for his 83 camaro but then sold it and got a 92. I am going to put this on ebay but have no idea how much I should ask for a kit like this.

Vortec Conversion Kit for small block Chevy
Includes:
- 1998 Vortec Chevy Cylinder heads w/4000 miles on them
- Edelbrock performer Vortec intake manifold (NEW)
- Compcams high energy emissions legal Vortec cam (NEW) w/ (NEW) lifters, push rods, & springs
- Timing Chain (NEW)
Cylinder head gasket intake manifold gaskets from Fel-Pro (NEW)

http://www.badpolizei.com/gallery/main.php/d/492-2/CAR-PARTS-02.jpg

I am sorry if this is not where I should be posting this.