It really repends.
If you still have the box and all the acessories, it could sell for $100-$250
but if you don't have the box it could sell for $50-$100
The average price appears to be around 70 to 100 dollars. There are different condition ones that sell for different prices but if it were an average Nintendo NES System it would be about this price.
You can safely sell your gold at a fair price at: www.Cash4Gold.com
The price that you bought it for is the price that you should sell it for if you haven't used it much and it is still in good condition. If it isn't in good condition, sell it for half price. But if your selling it on the internet like E-bay, then sell it for a little cheaper.
To make money. Buy low (price) sell high (price).
One can purchase a used NES ROM on Amazon for as little as $40. One should buy a used NES ROM if they are looking for something with a smaller price tag, but one can also buy a new one on eBay for $110.
Friends should not make a profit from other friends. Sell it back at the same price.
I would sell for half the price. So that would be $250.00
Both.
Principles should choose to sell directly to consumers because they can negotiate on the price. Sometimes, the principal can raise the price to earn more money.
$300 to $500 depending on system you get
7 $
gamestop they have a good price at 12.00$ for it I think