We dance around this subject a lot, let's get straight to the point and start listing them out. Add to the list if you have something to add, otherwise use it as a resource!
Where do you go to find vintage (really any "no longer published") video games ONLINE?
Try to include the URL as close to the target as possible.
4 Jays:
http://www.4jays.com
Amazon.com video game auctions:
http://s1.amazon.com/exec/varzea/ts/...890419-8764161
Atari2600.com:
https://www.atari2600.com/cgi-bin/cp...&sub_pg=splash
AtariAce.com:
http://www.atariace.com/
Atari Guide:
http://www.atariguide.com
B&C Computervisions:
http://www.myatari.com/
Collectors Cards and Games:
http://www.collectorscardsandgames.com/games.htm
Console Passion:
http://www.consolepassion.co.uk/
eBay video game auctions:
http://entertainment.ebay.com/1249?s...me=MOPS5:HMD05
eGame Addiction:
http://www.egameaddiction.com
Electric Quarter:
http://www.electricquarter.com
Electronics Boutique (EB) pre-played games:
http://www.ebgames.com/ebx/categorie...ages/preowned/
Epoch Games:
http://www.epochgames.com/
eStarland:
http://www.estarland.com
Family Game:
http://www.robwebb.clara.co.uk/shop/
Game Express (modern era stuff):
http://www.gameexpress.com
Game Farmer:
http://www.gamefarmer.com
Game-Lord :
http://game-lord.com/
Gamestop pre-played games:
http://www.gamestop.com/default.asp?sect=1199
The Goat Store:
http://www.goatstore.com
Good Deal Games:
http://www.gooddealgames.com
Half.com videogames:
http://half.ebay.com/products/games/index.cfm
J2 Games:
http://www.j2games.com/home/
Japan Game Stock
http://www.japangamestock.com/
Lik-Sang (primarily imports):
http://www.lik-sang.com/
MegaGamesStore:
http://www.mega-games-store.com
National Console Support (primarily imports):
http://www.ncsxshop.com/cgi-bin/shop
Oldergames.com:
http://www.oldergames.com
Packrat Video Games:
http://www.packratvg.com
Play-Asia.com (mostly imports):
http://www.playasia.com/
Raven Games London:
http://www.ravengames.co.uk/
Retro-Fish:
http://www.retro-fish.com/new_site/
Retro-Games:
http://www.retro-games.co.uk/
Retrogear UK:
http://www.retrogear.co.uk/
Sega-Parts.com:
http://www.sega-parts.com/
Slackers CD's & Games:
http://www.slackerscdsandgames.com/
Telegames USA:
http://www.telegames.com/retail.htm
Telegames UK:
http://www.telegames.co.uk
Used Games!:
http://www.usedgames.com
Video Game Connections:
http://www.videogameconnections.com
VideoGameDepot:
http://www.videogamedepot.com/
Videogame Imports:
http://www.videogameimports.com
Videogames999:
http://store.videogames999.com/
Vintage Fun World:
http://www.vintagefunworld.com
W3ace.com (see AtariAce.com)
Warp Zone:
http://www.warpzonevideogames.com
Wolfgames (mostly imports):
http://www.wolfgames.com/
Xinga (pirates, wholesale):
http://www.xinga.com
Yahoo video game auctions:
http://list.auctions.shopping.yahoo....ml?alocale=0us
Yamatoku.jp (mostly imports):
http://www.yamatoku.jp/game/
YesAsia.com (mostly imports):
http://us.yesasia.com/en/index.aspx