unopened NES Games

What is the best place to go for unopened NES games? Anyone on Ebay very trustworthy?
What should I expect to pay for a classic unopened game? $50? $200? more?
I'd be looking for a handful of popular ones.
What should I expect to pay for a classic unopened game? $50? $200? more?
I'd be looking for a handful of popular ones.
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Some of the black box games...Super Mario Bros, Excitbike, Kung Fu, etc are pretty expensive. I think popeye is rare. $1,000-1,500. The first mega man game is very expensive sealed. Some of them go for a few hundred, like double dragon or contra. Mario 2 and 3 can go for a few hundred dollars.
Some are like $30, like ice hockey. There are a lot of good photos at the nintendo age site, people showing off their games and other memorabilia. There are cool signs, posters and in store displays to collect too.