Expert Help Needed - Rare Game Boy Colour developer roms

[Russfierce]

Hi

I have acquired a few developer Roms for Game Boy and Game Boy Color and believe a few of them to be extremely rare. Is there anybody who could point me in the right direction for getting them valued.

I have about 25 of these rare roms, brought from a friend many years ago and due to the fact that there are only a few in existance I am finding it almost impossible to find out their value. Nearly all of the roms are on Grey Cartridges, with a panel missing from the back, where you can see the insides of the cartridge including the battery.

I have no idea if they are still working, but can probably find a console somewhere to test them.

The three carts that I am most interested in pricing are as follows:
Metal Gear Solid GBC
Resident Evil Preview Code
Resident Evil Gaiden Review Code

I do hope someone can help me find an expert to get a reasonable valuation on these rare gems.

[mb7241]

Pics would speak volumes on these..you may have a small fortune there.

[Manhattan Sports Club]

Yes, these are definately worth something!

Also, do you happen to have a copy of South Park for Gameboy Color among that set? If so, let me know.

[Baloo]

You're looking at a gold mine, especially if any of the games are unreleased...