These auctions (not mine) from video game auction site Chasethechuckwagon.com might be of interest to video game collectors looking to buy collections.
NES collection:
ChaseTheChuckwagon.com Item: 0000144506 -- My NES collection
includes:
NES In the original box with the manual controller and power adapter. All In Excellent shape!!!!
Battleship w/ Instruction book
Blaster Master
Chessmaster
Duck Hunt
Dr. Mario w/ Instruction book
Faxanadu w/ Instruction book (has writing on it)
Golf
Jeopardy!
Kung Fu
Mike Tyson's Punch-Out w/ Instruction book
Milon's Secret Castle
Monopoly and box with poster
Punchout and box w/ Instruction book
Rad Racer
Solitaire by American Video w/ Instruction book
Solomon's Key
Super Mario Bros./ Duck Hunt w/ Instruction book
Super Mario 2 w/ Instruction book
Super Mario 3 w/ Instruction book
Spot The Video Game
Tetris w/ Instruction book
Tengen Tetris (considered to be the Holy Grail of the NES!!)
Tetris 2 and box w/ Instruction book
Wheel of Fortune
Yoshi
Yoshi's Cookie w/ Instruction book
The Legend of Zelda (gray cart) and box and original map (illaminated by me) w/ Instruction book
The Legend of Zelda The adventure of Link (gold cart) w/ Instruction book (missing cover)
Game Genie and Original code book along with the NES top loader adapter (very rare)
Original NES Controller box
NES “Max” Controller
NES power adapter
Universal antenna cord
Parts from a NES Advantage Controller
NES Light Gun
Top Secret passwords Nintendo Power
Super Mario Bros. 3 official Strategy guide
Nintendo Power dated January / February 1989 Zelda II on the cover
Also comes with what was once an "official" Nintendo game holder box pictured