It looks like a fancy metal strainer. any sufficiently fine paint filter should work just as well, even a paper filter would do the same (automotive shops use paper filters, so they can't be that bad)
You're full of bs. the artists sell them for $95 on hum3d, then they won't want you giving them away free.
First line of the license:
The CUSTOMER may NOT:
redistribute PRODUCT or modifications/parts of the PRODUCT;