The GC online store does not seem to carry Game Boy Advance games.
Pokemon Diamond Pearl and Platinum are games in the Pokemon series. There is no secret store in Pokemon Pearl version.
at any walmart or other store
ebay.com, EB games store if you have one near you
You can play Pokemon red on the original Gameboy, Gameboy Pocket, Gameboy Color, Gameboy Advance, Gameboy Advance SP, Nintendo 64 (with Pokemon Stadium, you need the special adaptor that you plug into the control to plug the game into), and the Nintendo Gamecube (with the additional Gameboy Advance player that plugs into the bottom of the system that is used to play Gameboy Advance games).
Go to Gamestop, or EBgames, or almost any store that has used games.
It's the Nintendo World Store, not the Pokemon Center. The Pokemon Center was replaced by the Nintendo World Store in 2005. And no, it doesn't have old games and consoles. It only has current generation games and consoles.
Advance Auto Parts
Game stop. That is where I got my Firered game.
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Item BoxesYou can't store items in Pokemon Diamond and Pearl. The Item boxes were only for the older games. Now, to store items, you can just give the items to Pokemon stored in the PC.
gamestop, toysrus, EB games, kmart, coles, JB hifi playntrade, and walmart will have the games