Do any of your clients gripe about the light and dark halos and shadows, as seen in your 3rd shot next to the windows and doorways...
No. I try to keep halos and shadows to a minimum, although sometimes they still shine through. A curse (and blessing at times) with the MLS system is that the images are displayed at a very small size and resolution when potential home buyers are searching. For my clients to have 25 professional looking images posted for their home or listing it really sets their house apart from the homes with 3 crappy pics snapped with a smart phone.
If my clients are looking to print anything of any size, I spend a little more time cleaning up images for print.
I will admit, that to keep my pricing fair and my turn-around time short I have set up a semi automatic workflow process that keeps my "hands on" editing to a minimum. While the HDR artifacts are not completely absent the images do look quite clean for the most part and clients feel like they get good bang for the buck.
I understand where you are coming from when you mention time input with editing compared to income, so I try to provide the best product I can for a reasonable price. On a typical 2,000 square foot home I spend about an hour shooting, let my computer batch process for an hour, and then about 40 min-60 min in post polishing the final HDR images. Clients end up with about 35 photos depending on the house and grounds....