Just to make clear, LR - it is not the 'big names' letting you down as far as I know - it is the people printing 'big names' on crap disks.
As an example, I luckily avoided (via Google) buying quantity '64GB Sony flash drives' on Ebay from China. Turns out they are AT BEST 500mb drives repackaged in 64GB 'Sony blister packs'.
Cue your thread title.......................