Price Charting is a great tool, but it's at a scale now where you could add a few more features:
1 - Consider adding your own buying/selling feature where buyers & sellers can transact at a lower fee than e-bay;

2 - Consider allowing users to add games (such as PAL) and game accessories to the database (or at least add as a selling feature) that are not already in the database; and

3 - Consider giving collectors/sellers options (i.e.--pull-down menus) to look at e-bay averages in different perspectives.  For example:

What if I choose to take out the highest and lowest e-bay sale price to see what the selling-price average would be then. This helps me to determine a fair offering bid from the buyer.  Or what if I wish to see e-bay sales within a certain date range.

All these options would allow collectors/sellers to determine what they consider to be the fairest bid or asking price. 

Alphabetize Zelda games as Legend of Zelda rather than Zelda.

There is no one site with all pricing information for auction/ebay results for numismatic items.

The Jungle Green N64 is a seperate console from the original N64 and should ne tracked that way.

it would be great to have the prices for the insert such as booklet, maps, posters etc.

on consoles of different colors than listed in database add an other color line in the ads

I host my images for my products on the web. It would be beneficial if we could upload our images for our products from a website.

Can a shopping cart feature be added so Items can be paid for 'all at once', instead of multiple transactions?