Cartridge variations question for gens 3 through 5

[BetaWolf47]

I'm curious as to whether some games are worth more in alternate variations. Baloo sparked my interest. For example:

-Some NES game carts were manufactured with a 5-screw version and a 3-screw version
-Some games have a different color variation

It's obvious that games like Zelda, which came in gold and grey for promotional purposes, have different market values between cartridge variations. How about for games that just had different carts for no apparent reason? Can anyone name specific examples in which one version is worth more than another, while neither is a "special release"?

[mrmark0673]

One of the hot ticket items right now as far as screw variants is the Mega Man 5 screw cart. There are only 3 currentl confirmed to exist, it brings in $100+ if it is ever for auction.

A list or relative rarity can be found here: http://www.nintendoage.com/forum/messageview.cfm?catid=5&threadid=12044&highlight_key=y&keyword1=3%205%20screw

MB summed it up nicely in that thread, the ones to look out for are:

5-screw Alpha Mission
3-screw Donkey Kong
3-screw Donkey Kong Jr.
3-screw Gyromite
5-screw Mega Man
5-screw Star Force
5-screw Super Pitfall
3-screw Volleyball

Hope this helps you and others!

[BetaWolf47]

One of the hot ticket items right now as far as screw variants is the Mega Man 5 screw cart. There are only 3 currentl confirmed to exist, it brings in $100+ if it is ever for auction.

This has probably been discussed before, but I bet there's a ton more but people don't think to check their own carts.

I'm also curious about Turok 2 for N64. I know that the grey version is rarer, but is there a price difference?