I picked up 12 of those LG Innoteks (the 550mA CC ones, PISE-Z101B, to drive some strips) while they were $8.21 each.
They had the highest efficiency of the bunch, at 93%. Stupid cheap for 150W.
But yes, seems like the sale is over for now. The prices and minimum quantities just jumped for most of them.
All of the spec docs, and my memory of 'LG Innotek' being a thing, suggests that these drivers have probably been sitting on a shelf since 2014. It looks like a solid driver, but it's a bit dinky. No earth cable. Wires are solid core. Manufactured in 2014.
I've bought a few of the $8, 100W, 1.4A CC, Moon Industry ones too, but they also jumped up to $30 today. It was a great driver for $7. But not $30.
I think the prices will have to drop again some day, cause these random old companies won't compete with Mean Well drivers at Mean Well prices.
The ERP Power VLM-60s at $15 are probably the best deal left, at the moment. Not a great deal, but pretty good. Super tiny drivers.