You should've thought of that before buying the drive huh? Well... do they charge 15% restocking like they do here? If they don't I would return it right away. It's not like these deals will never be again.
Fry's and another eBay seller are selling a 4GB Seagate MD for $75 USD. It's not those OEM drives, so it's pretty safe to say they work in PDAs
(I think the eBay listing says so too
). It's just a bit more than the USB drive you got, plus shipping.
(Taxes are the same I suppose?
)