I was visiting a Machine Shop in South Edmonton, some years back, the place was spotless clean, and well lit, with CNC machines throughout, except for one solitary 24 or so inch stroke shaper, all alone in the middle of the room.
When I sorta squinted at it and cocked an eyebrow, the owner just laughed, said that he had a couple old Euro guys that still kept a hand in, and the shaper allowed them to do jobs that would have otherwise been difficult, impossible, or simply cost way too much in custom tooling. He stated outright, that the shaper earned every bit of it's floor space required, and paid well enough that it wasn't going anywhere anytime soon! Putting the lie, to the old saw, that you can make anything on a shaper except money! LOL!
Most of the jobs were keyways and slots in VERY large pieces of Process Equipment for the oil industry.
The big ones are out there, and if you shop well, can be got for pretty cheap, as long as you have the means to pick one up and move it. A friend got a 36 inch stroke shaper from a Railway shop, for about as much as it cost him in time and gas to get it home (which wasn't much!).
FWIW, I have an Aamco, had a South Bend 7 inch too, gave it to a shaper-less friend. I dunno if I erred in giving away the South Bend, but, WTH, it came to me for free, I gave it away for exactly twice what I paid, eh? The Aamco has a phenolic main gear, which, if it's in good shape, runs quieter than the South Bend's metal gear. The Aamco also uses a Vee thread for the feed screws, dead easy to reproduce. On the other hand The SB, has an actual oil pump for internal lube (this one did, IIRC, not all do), and used Acme threads for the feeds (not THAT hard to reproduce). All said, I had the Aamco already, and no attachments to the SB, so I passed it on to a friend. Was a pretty good day's scrounging, that day!