I'm guessing that the number you have listed for systems prices is an average of all the colors and limited editions. I find this to be not very useful, and I would suggest posting most (one-of-a-kinds aren't necessary) of the editions separately.

I know this would take up a lot of space, so I would imagine those 2 rarityguides be structured like a "favorites" folder on Internet Explorer, aka, click on the system to display all of the prices.

And I can help get those numbers if you need me too.