The rebuild sounds like a corner or two is being cut, notice that he doesn't replace the air cut off valves. Those little gems run around $80 for an 1100. I think I'd rather use someone like Pistol Pete who specializes mostly in 'Wings. He's going to charge twice as much but you'd be guaranteed a good rebuild.
Well, I'll stick with quality, if I was going to have carb work done by someone other than myself, I would go with Andrew at Classic cycle in Texas. I've seen his work, and it is first rate. Also, he is a member here on the forum. $185 is extremely cheap,I doubt I could do my own on the 1100 with good parts that cheap. Sounds like the same guy that screwed over another member on the forum a while back. He sent his carbs in and never got them back as I recall.:shock:
It doesn't nessarily follow that the cheap carb rebuild wouldn't do the job. If your air cut off valves and float valves were okay the remaining parts to do the job aren't terribly expensive especially if low priced gaskets and such are used. That doesn't mean they won't work either. The only problem I see is that you'd probably get back carbs that would work but might not work as long as they would if you got a first rate rebuild. Like anything else it depends on what you can afford. "Affording" is why most of us got into repairing our own stuff anyway.