What's amazing to me is that there are loads of classic folk albums which don't even seem to be available on CD, or at least aren't being sold any more so you have to try buying them second hand. Nic Jones' early albums being a good example, along with Dick Gaughan's first album. For stuff that's not on Spotify and for which no CD is available, I can usually find an upload on YouTube (even if it's a scratchy vinyl rip) or I can find someone to download it from on Soulseek, which has always been a great place to download rare stuff that isn't available or very hard to come by.