I guess they would have had to replace the bottom bracket with one with a shorter spindle, but so what, that's not $150 by even the wildest stretch of the imagination (unless they are putting in a Phil Wood sealed bearing BB or one of those Gucci Campagnolo ones with the titanium spindle & ceramic bearings). A Shimano LX cartridge BB costs $25 or $30, and I doubt they would have gone nearly that high on the food chain.
I was going to provide all of the parts, they were just going to do the labor. I'm just going to replace it all myself once I trade in my crapass textbooks.