Atari 2600 cart binders

[kainemaxwell]

Anyone familiar with these?
http://www.ebay.com/itm/Seven-Atari-2600-Video-Game-Cartridge-Folder-Binders-in-Very-Good-Condition-/130933499375?pt=Video_Games_Games&hash=item1e7c3ea5ef

[tom]

Yes, they're the game program cases from Atari, holds 4 carts each side
http://i357.photobucket.com/albums/oo12/Alison123456789/programcase_zps74a9be69.jpg