All right, to steal an idea from someone else, I thought that I might propose some trade offers. Here is my list of dupes to trade:
Awesome Golf
Batman Returns
Bill & Ted's Excellent Adventure
Chip's Challenge
Dracula: The Undead
Gauntlet: The Third Encounter
Hard Drivin'
Hydra
Klax
Pit Fighter
Robo Squash
Super Skweek
Viking Child
Some have manuals, none have boxes.
My "need it" list:
Baseball Heroes
Basketbrawl
Battlezone 2000
Block Out
Desert Strike
Double Dragon
Fat Bobby
Fidelity Ultimate Chess Challenge
Hockey
Hyperdrome
Jimmy Connors Tennis
Joust
Lemmings
Malibu Bikini Volleyball
Ms. Pac-Man
Ninja Gaiden III
Pac Land
Raiden
Robotron 2084
Rygar
Scrapyard Dog
Super Asteroids / Missile Command
Super Off Road
Toki
Warbirds
Xenophobe
and any of the games released in the past 5 years (CyberVirus, Alpine Games, Championship Rally, etc.)
I realize that a lot of the games I have for trade are not that rare, and most of the ones I need are, so I'd go for 2-for-1s or 3-for-1s. Whatever.