With the housing market the way it is in Phoenix I wouldn't have any problem selling the house... maybe settle for a few thousand less if the ceiling is still popcorn.
And as far as having a professional remove it? ...
Around 1990 I talked to people who do drywall work. Everyone of them told me
1) if the building were used for commercial purposes (store/office/school/gov) they would charge me and arm and a leg to remove it, and use all the "approved" paraphernalia to do it: sheeting, vacs, masks, bunny suits etc. and also have to dispose of it according to Haz-mat regs
2) a private residence the would send maybe one or two guys out with half face respirators, gallon water sprayers/scrapers/plastic drop cloths, and dispose of it in the trash in 30 gallon plastic bags.
3) I know too many people who have done their own homes or bought homes to flip that do it exactly that way..,.. it's on youtube how to do it safely.
I did my 12 x 18 family room 30 years ago (before youtube existed). It was tiring and tedious (and probably contributed to my needing neck surgery 5 years ago) so I decided to leave the other rooms for someone else to do. ....And my lungs are still clear.
The hardware/ big Box home stores here sell "popcorn ceiling removal" kits and even have a video on it.
popcorn removal
Maybe in other states you can't do it yourself even in a residential structure.
But Arizona has a long [legislative] history of leaving people alone and not intruding in their home life.
Yes, we have plumbing and electrical and construction codes.
But once the home is built AZ has (up until recently) minimally interfered as to how you altered it, as long as it wasn't a structural change (which would then require a permit and have to follow code).