Perhaps for many of us, it is also the (probably unfair) comparison with CDs which over time, only seem to have gotten cheaper.
Klassik knows not about pop music CDs, but for classical music CDs, the prices have stayed pretty stable over the years at least here in the US. Back in the 1980s and 1990s, it seemed that classical CDs from major labels were usually priced around $12-$20 USD. Remarkably, even with inflation, the prices are around the same today. Given inflation, this means that the classical CDs are actually less today than in the past. Klassik will say that the prices for many classical CDs did increase here in the US shortly before the pandemic in early 2020. Classical CDs which normally were priced at around $16 are often now around $19-$21.
The biggest price increases seem to be on Naxos CDs which was considered to be a bargain label in the 1990s and their discs were often around $8 a CD then. Since then, they went up to $11, then $13, and now the new releases are sometimes around $15-$16 USD for a single disc album.
Oddly enough, the major labels have a lot of their new CDs at around that same price. Naxos and Deutsche Grammophon both released new Florence Beatrice Price symphonies CDs at around the same time a couple months back and they were priced the same. Klassik is guessing that nobody would have guessed that Naxos and DG new release albums would be the same price back in the 1990s, but to be fair, the reputation of Naxos has increased significantly since the 1990s.
The best values for classical listeners today are the bargain box sets issued by the 3 big classical music firms and also the likes of Brilliant Classics. With those, one can find recordings of all Beethoven symphonies, for example, from well-known performances for less than ~$20 USD for all the CDs. Some of these sets even include the liner notes.
Actually, right now, the Barnes & Noble book/media store chain here in the US has a sale on their website for 30% off several classical CDs/SACDs and there are some good deals there. They have LSO SACDs priced as low as $10 USD. That's certainly not bad.
Streaming might still present better value, especially for those using free options such as YouTube, but those wanting to build/add to a CD library at home will find that the prices are still not out of hand for most people. If classical CDs were $30-$40 USD each like LPs are, well, that might be a different story. That said, it seems people like to frame LP album covers and put them on their Zoom/Microsoft Screams backdrops. CD album covers probably wouldn't work so well for that purpose.