what are they worth?

[House]

I have 9-12 1/18 scale gmp cars with out boxes, how much are they aprox worth with out the box in good to mint shape

 

[quick 6 racing]

Prices would vary, per car from high production cars that are not so popular at $$30-$50 (White T,Grey T,X-Ray,Molly Red Prototype) to the more popular low production cars at $70- $150 (87 GN,Chrome GN, Chrome GNX, GNX) They also could be less if buyer really wanted the original boxes as well