why genuine?
sony or scandisk will do the job fine. quality the same
if u prefer u pay and people ship to u
try this
sony2Gb
sony4Gb
scandisk2Gb

if u prefer local, plaza lowyet will do the job
tell them u wan local make or original, for orignal price almost the same as ordering

I ask my friend to get a 2gb sandisk mspd and he got it for rm175.
according to rumours to check ur mspd genuinity, you have to check the magicgate compatibility. if its compatible means its genuine.
sandisk is also said to be faster than sony