Pretty sure it’s both, reseller sites like reverb & ebay cutting out brick and mortar stores & letting individuals resell easier flooded the market, then a bunch of sellers after the height of COVID pushed it even further. there’s just not enough people looking to buy what’s already available.

Some clients like the voyager app also let you hide or combine them

For some cheaper options drawing, writing, reading, used guitars have been much cheaper the last couple of years, chess, fishing, meditating, retro gaming, learn a new language, hiking, try to visit all the parks in your city/county/state, discussing hobbies online, etc.