would i be better off selling the carts seperate from the manuals if i don't have the boxes to the games or selling the carts with their respective manuals i ask this cuz either way i have no idea how to price either way but just trying to get some feedback   

Sell with the manuals. No one wants loose 5200 manuals  

Yeah, I think 5200 is far less attractive than 2600 or 7800. You're better off bundling and hoping someone wants either item.

Yeah,manuals for CV and 5200 games aren't worth much by themselves. Gamevaluenow.com has pricing info for both systems.