It would be nice if game condition was listed in the historical pricing trends to help explain volatility in selling prices without having to click on the link. There are times where I'm trying to see how much to pay for an item where the game went for a lot lower than market price... sometimes due that most listings were listed on ebay at 'acceptable' with a torn label and other times it's because the buyer caught the market at the right time resulting in a great deal. Those factors help me determine what I should be paying when I'm on the hunt for a game.

the site used to allow the option to look at systems and controllers to see their values and now that option is missing.

Add to NES price list. There won't be a loose price as the only way to distinguish this version from the regular version is the sticker on the box itself, but CIB and New copies command much higher values than the standard retail version.

It would be helpful to be able to print and pay for shipping labels of this site

you dont have expansion modules

It is a hassle, especially if you have many items, to know whether your listed prices are in line with others who might also be selling the same game(s). An example is Amazon's "Match lowest Price" option for sellers. It keeps prices in check while also helping to curb artificially inflating game values.

We need to be able to communicate directly through the website. The e-mail messaging system gets lost with the hundreds of other e-mails I recieve. Plus it'd be a lot easier to organize and go through the messages and whatnot

It would be useful to be able to view the marketplace through the mobile app. I would especially be interested in features similar to the eBay mobile app. Mainly ones, such as getting a notification on my phone when an item sells. This would allow me to potentially ship sold items more quickly.