"Is there a secret stash of 1127s somewhere awaiting conversion, or are we destined to wait an age until/if solid state solutions QRO get affordable?"
Not that I'm aware of! I was VERY lucky to find mine.
Sadly, G4EAT had "to shuffle off this mortal coil" and G8KQW had to lose interest in 24GHz before mine became available, sadly!
Hope you feel better soon!