If you have removed the IC chips off the memory sticks then its probably cost you some $ if you could have sold them whole to a escrap buyer.

The $ value that they see is more than what we see, theres Silver & Tin in the solder & Copper tracks inside the fibreglass & even that waste fibreglass can get them $ as a flux/cap in Steel furnaces ( i read somewhere )



But if you have a furnace kiln.
You could do 'Patnors method' ( Gold refining forum ) & roast all of them till the plastics carbon dust, sieve it to remove the chip dies & then Gold pan it to get the Gold, & maybe Silver wires.