Complete brake job...again!, i need new brakes Options

[liquor]

Well the topic says it all. 2 1/2 years ago I changed all four discs (plain brembos) + pads and
the guy at the garage now tells me my pads are going away and that i should change the discs too
(some have been threaded). I havent done much mileage since 2 years - mostly city driving and I
usually drive smooth on the car.

Do you believe its normal wear? or maybe cheap parts or bad installation or the garage trying to rip me off?

Also, whats the best place to buy the brakes ? (I know nopionline.com sells the brembos cheap)

Thanks