Around 30 bucks in good condition.
Yes online.
A used system sells anywhere from ~$35 to $350 depending on the model and condition.
Toys 'R Us no longer sells Nintendo 64 systems, but Play'N'Trade still deals in them.
You can sell one online or at a secondhand shop that carries old video games.
It looks like many places are selling out.
$199
eBay and craigslist are good places for getting games.
A used Nintendo 64 goes for about 30 to 40 bucks in good condition.
Nintendo 64
Probably 15$
The 64 was the graphics of the game console. In other words, the Nintendo 64 had 64 bits.
I can't really help you much on this but there was a really annoying Christmas ad. If you search "Nintendo 64 Christmas commercial" on youtube you can watch it.