Over the last couple of years, Rory Ferreira, aka avant-garde hip-hop artist R.A.P. Ferreira, noticed that on Discogs, an online record marketplace that specializes in resales, the physical versions of his albums were trading for several times their original price.

So when planning the vinyl release of his latest album, "Purple Moonlight Pages,” he decided to charge accordingly.

"I’m not going to knock anyone’s hustle. I just need to make sure mine is calibrated accordingly, too,” he said in a phone interview last month.