Are you referring to the Vic-20 system itself or to the Vic-20 games in general?

You can download all the game data we have to a CSV file, which can then be opened inside Excel.

Visit this page to choose the data you want to download:

https://www.pricecharting.com/video-game-price-guide?f=menu

This is done.  All Neo Geo games are broken out by MVS and AES.

You can see all the AES games here:

https://www.pricecharting.com/search-products?type=videogames&q=neo+geo+aes

We will be adding Neo Geo CD later.

Thanks for this suggestion.  I always like supporting Bitcoin when possible.  I'll make a note about adding it to the site in the future.  For now, you can send bitcoin donations with this wallet:

1PcydhUiZZAU4fcSgSHwfRAHVK4ZrQ4msR

Thank you

Thanks for this suggestion.  I always like supporting Bitcoin when possible.  I'll make a note about adding it to the site in the future.  For now, you can send bitcoin donations with this wallet:

1PcydhUiZZAU4fcSgSHwfRAHVK4ZrQ4msR

Thank you

I've added the Sports Pad Controller for Master System.  

Can you give me a particular console that we are missing the light gun for?  We have all the 1st party light guns that I'm aware of, but we do not generally track 3rd party accessories unless they are rare/valuable because there are so many and most of them are crappy quality and/or low price.

We make our website mobile friendly.  You should try browsing it directly on your phone and see what you think.  All the latest features and updates happen on the website.

You can even save the site to your phone’s home page so it looks and runs like a regular app.
http://www.howtogeek.com/196087/how-to-add-websites-to-the-home-screen-on-any-smartphone-or-tablet/

Most of our website users are on mobile phones now.

We chose this route instead of an app and website because that would require us developing the same thing 3 different times.  Once for iOS, once for Android, and once for the website.  By focusing on just the website and making it mobile friendly we can provide the most features to users without extra development time.

I see see the value to this sort order.  I'll wait to see how popular this suggestion is with other users before deciding on prioritization.

The Aquarius is a bit too niche for us to track the prices.  It was only available for a few short months and hardly any sales occur for it's games.

Closing in favor of this existing request: 

http://pricecharting.userecho.com/topics/169-chart-the-historic-prices-for-my-collection/

Please go there and cast a vote for this if you still want it.  Thank you.