Exactly. If a really nice 3 LP set can cost $35, why is a single LP also $35, or $40, or $45.I think @djdavedk is saying that those prices can still turn a profit, while others are simply gouging the price because people will buy it.
(non-"audiophile" press)
The Stereolab reissues sound amazing, so to me, they are audiophile releases!