pro-duo psp memory stick

I just bought a psp without memory card and i don't know wich one is good or bad and i don't want to pay much money because i payed almost everything for the psp. my budget is arround 20 euros. if you know a good card pleese could you give me a link
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is it the same format as a micro sd cart???

Similar format, different shape.
It's a Pro Duo memory card, rather than MicroSD/Transflash or SD.http://www.amazon.co.uk/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=8GB+Pro+Duo&x=0&y=0I'd check your local electronics shops and see if they have any.