[quote name='panasonic']damn i really want to bite on the 4gb for $100 but i think i rather wait see how low it goes by september maybe i can buy an 8gb for $150[/QUOTE]
Lots of luck with that, from what I understand 1.5 PSPs can only see up to 4gb (that's why the Datel PSP Hard Drive, while containing a microdrive, is limited to a measly 4gb). Unless Sony releases a firmware that specifically addresses that limitation, AND the homebrew guys can come up with a way to overcome the paradoxical problem of not being able to get the PSP to see an application that would enable you to see the application on an 8gb card, 1.5ers are stuck at 4gb.
Edit: That said, I bit. I keep biting. Now I've got a 32, 512, 1gb, 2gb, and a 4gb in the mail.