TMC - "Why such crap" is my question and the whole Below-Slow crowd's question, too.
I'm sure these are the garbage chips. The first-runs, the "can we do it?" chips that aren't fit for normal use.
The Pig-Slop Chips, in other words. So someone sweeps them off the deck, sticks them in a bucket and sends them out to assemblers with a message, "See if you can use them - we won't put our name on the outside."
These may be testimonials to the computer assemblers' notion of recycling - or flea markets. "You can sell anything if it looks like a big enough bargain..."
It's probably noteworthy that there are huge price variations on these products. The 32Gb prices are fairly stable - from low to high. There aren't a lot of those that are double-the-price of the cheapest models, and those are usually the USB 3s.
But the 64Gb range has huge variances in prices - the most expensive models are 3 and even 4 times the price. Which means 'really old inventory' - yeah, unsellable at those prices when probably the same calibre is $30!
I wish some marketeer would have the courage to print "This is crap, but it works and it's incredibly cheap!"