Yea, these guys were a drywall only sub. Most of their work, I gathered, was with GCs and builders, not home owners directly. When there is a GC involved they usually provide things like dumpsters. Also, when i built my house I used a builder. His drywall sub left the dust behind as well. the GC (or another sub) did the clean-up before painting and before carpet, etc. I think thats likely standard practice in my area.
Anyway, I'm not complaining, I just wanted to provide some context for the price I paid for this particular job so an apples to apples comparison of costs could be made. I would expect to pay a little more if the concrete floor of my basement (where the DW job was) was left completely moppped, the scraps hauled away, and a 100% flawless finish was achieved.
They did not get a A in finishing because I needed to use 'medium' sized outlet covers versus the standard small ones (rotary tools leave a larger gap), one seam on an odd angled wall could have used a wider joint (only I will notice), and one corner of a soffit was a little off with a bit of corner bead showing. Maybe I'm too picky. I was able to fix the soffit and use the slightly larger outlet plates. I am living with the one joint that should have been feathered out farther.
That particular joint was where a wall jogged out to accommodate a sewer drain, the wall looks like this
The wall in the middle was about 30" wide, the outside corner was only feathered back maybe 14" or so, same with the inside corner. This left a slight depression in the middle of that 30" wall. Ideally this would have then been skimmed with a coat of mud in the middle. I didn't notice until everything was painted and the trim was going on. I was able to get the trim tight to the wall and its not noticeable so I'm not going to fix it. Well, its noticeable to me but not anyone else.