I'm not to sure if this has Been suggested yet so I thought I should make a topic just I case :-)
Well I think it would be a good idea to have a prices/ price check section in with the Nintendo 64 category because when I find my self wanting to ask a question about a price of a game I find myself making a topic in the collecting section and I dont think that is a good place to make a pricing topic so I think game price questions etc should have its own section :-)
I think this is a good idea but its really difficult to keep an updated proper list. You might want to check out this site that tracks ebay and amazon sales:
Video Game Prices & Values
Also I just did these:
Pricing Guide for N64 Controllers
Pricing Guide for N64 Consoles
I made these videos in the past week or so, hope they help. I am going to be posting a video about N64 accessories and some of the more popular games in the next few weeks too.