If you're a technically savvy sort of person, or know someone technically savvy (or come into an unexpected inheritance!) then it's possible to set yourself up (or buy) a Hauptwerk electronic set-up, and some of these are phenomenally good (to be honest, I think they will be the saving of the organ(*)). This is an electronic organ set-up, but not the conventional bought-in-a-box, what-you-buy-is-what-you-get set-up. Instead it's based around a PC, with sampled notes taken from real organs, which gives it a very realistic sound, and allows a choice of appropriate organ for the music that interests you.
+1 for Hauptwerk virtual organ software. Not inexpensive unless you build/convert the hardware yourself or (like me) make friends with a retired electrical engineer who converts old organs for fun, but I have learned so much more about pipe organs than could ever be possible (for me) without it. And it's so enjoyable to play.