I have bought 2 memory stick duo pro 2GB from 2 different sellers from ebay.co.uk...Althought they tell that the item location is at UK,they send the card from China and Shangai...I have never seen a seller that sell's via ebay original memory stick duo pro cards!!!!!

ALL THE MEMORY CARDS THAT ARE LISTED AT HALF PRICE OF THE ORIGINALS ARE IMITATIONS!!!..

NO WARRANTY,SLOW TRANFER SPEED,DEFECTIVE!!!

If the seller doen not give you a refund,make a dispute at Paypal Resolution Center.I received a FULL refund for both of the products...DEMAND THE MONEY YOU PAID,BACK..They breach ebay's listing policy and the information page are misleading with untrue information.

CONTACT THE MANUFACTURERS PRODUCT SUPPORT AND WILL TELL YOU,
WITH THE SERIAL NUMBER ON YOUR CARD,
IF ITS COUNTERFEIT.

For Sony Memory Cards ----> http://esupport.sony.com/US/perl/select-system.pl?PRODTYPE=27,59
For Sandisk Memory Cards ---> https://www.customernation.com/pls/ps/ps.ps_main?p_host=304&p_supplier=5096&p_parm=PSHPP

You can check if yours is genuine with this guide

http://forums.keeptouch.net/showthread.php?p=1514505

Sony sues Fake memory stick Makers and Sellers

http://www.i4u.com/article6082.html
http://boardsus.playstation.com/playstation/board/message?board.id=psp&message.id=2367824

And you can report your counterfeit item at ebay(At the bottom there is a link for Report)

http://pages.ebay.co.uk/help/policies/replica-counterfeit.html

!!!!!!==EXTREME CAYTION==!!!!!!!
Yau may receive a refund from the seller but he may have not money on his account so the payment will not be credited to your account..
Paypal says that the payment should show up on your account after 2-3 days...Wait 5 days to receive you money in paypal account,contact the seller if you have a problem and when you will be credited for the refund then post the item back......

HOW CAN WE TRUST SOME SELLERS THAT MISLEAD BUYERS WITH UNTRUE INFORMATION ON THE PRODUCT PAGE,AND HAS SOLD OVER 3000 PIECES??????

Here what is writen on the Paypal's Help Section

Why is my refund pending?

When your refund was sent, there were insufficient funds in your seller's PayPal account to cover the payment. Because of this, the refund was funded via an electronic funds transfer from their bank account. This refund will remain Pending until the bank account transfer has been completed.