Let's face it... 90% of John Lennon's solo work is awful.

(My opinion... but I thik a lot of people would agree if they could overcome their Beatles loyalties)

I think we want it to be great, because it came from him... but I'd have to say that outside of The Beatles, George Harrison & Paul McCartney solo work (& Wings) are far more likely to make it onto the turntable with greater frequency than John Lennon's work. (Acknowledgements of course to Ringo).
And you can pick up pretty much mint, and virtually un-played copies of all this very cheap in charity stores (Which is saying something in itself).