>>2019406they are 'unix' brand, model 'ariano'. You'll find the same baskets sold under other names at often higher prices.
They have not yet seen the mileage of their predecessors, various bags, so no comparisson here.
Recently lost a lunchbox so maybe the open top is an issue. Also if not weighted down sufficiently the floor may creep up from its fully unfolded position. Folding the baskets may be slower than anticipated the first few times as you'll need to figure out a few moves.
They are rather flimsy, of course they are. Mine have a few subtle kinks by now but it doesnt change the function at all.
The neat thing: When folded it's really as if they weren't there at all. If the bike has some weight to begin with you wont even notice the weight.