The price pretty accurate for what u get - those lenses r mostly just incredible and worth there price tag. And despite the fact, that there is no "Rebel Type" RF Kamera on the Market yet (The RP still costs a lot more than the Rebels), the typical Rebel User is probably buying it's lenses on the second hand market usually though. The wide variety of lenses from 30 Years of EF Lenses is still available there and is as good as before. The RF lineup is still pretty new and they can't release ALL Options simultaneously but if they would have startet with cheap lenses, no pro or semipro would have considered switching to RF/R-Cams.
BTW: With the 35mm and 50mm 1.8 and the 85mm 2.0 they actually have some decent options. The 35mm cost about the same as the EF 35mm 2.0 used to cost. And take a look at the roadmap - cheaper options are coming