Apologies to those Give a Mouse a Cookie guys...

If Neku buys Pokemon XD...
             she'll need a memory card for her saves.
If Neku gets a memory card...
             she'll want a Transfer Pack to send over all the Pokemon she's caught.
If Neku gets a Transfer Pack...
             she'll want to get Pokemon Box.
If Neku gets Pokemon Box...
             she'll have to pay exorbitant shipping charges on Pokemon Center (since that's the only place you can buy it. Commies.)
If Neku buys all of the above...
             she'll be BROKE.