Some models - price check

I recently had the chance to buy a UT 1.18 scale model of GTR01R--the Ueno Clinic model. It's doors and rear engine lid seem to fit loosely, and it does not even have the unique bonnet-mounted headlights on the front! I am a little disappointed. Can someone tell me how much these models go for?

I also got two 1.42 scale models, one of a blue roadcar, one of the Ueno Clinic model again. These seem to be a lot better but the doors and other panels do not open.

The blue metallic one says that it is one of 8,460 pieces, and is made by Minichamps. What would be a good price for this?

The Ueno Clinic one is made by IXO and seems to be pretty good. It has the correct lights in the front. Any ideas on price for this one?

Thanks.