Game Sharks can be found for sure on Ebay and Amazon, however a chance of finding one at a local game shop might be rare. Now the price for a Game Shark is usually around $10, that's a common selling price, anything over $20 is pretty steep.
.j.
Titties!
Mad Catz made the Gameshark.
No.
As long as you have the proper codes for your version of the software you shouldn't have any problems getting it to work.
Nintendo i guess
Ebay, Craigslist, used game stores.
Project 64
No where, believe me I've tried to find one myself and there was none except for a N64 gameshark I saw and that was it. Try calling MadCatz for a special order because they still sell gamesharks.
You only have two options Gameshark or Action Replay. I think I would go with the Action Replay because codes are easier to find.
it opens the cheat in the game Examples: Press GS button for 99 Coins.when you push the GS button, it opens 99 coins
25-50 usd.
Goldeneye for the Wii has much better graphics, and a developed storyline. But I still prefer the original for the N64 for its simple-ness