as much as a coalition sounds good, its like being part of a union. It never works as well as individuals doing for themselves what the coalition would do for them.
If each individual markets just a little about the difference in quality that a more professional cleaner can provide and that they get what they pay for, then that will go much farther than a bunch of coalition ads.
I just got a compliment from a client that I cleaned for Home Depot. The owner said I was the most professional cleaner they had ever used. Its a great compliment for myself but its a pathetic statement for the industry. I didn't do anything THAT spectacular. Moved their furniture with sliders and a lift buddy, set up corner guards, vacuumed, pretreated, sebo'd, rinsed. The basics.
SO, as for the low-ballers, they aren't competition. If someone wants to use that type of cleaner I will educate them as to what they can expect and possibly recommend some of the better low-ballers.
A lady had me give a quote, ~$1000 clean and protect, and her husband and mother-in-law out voted her and they went with Coit because of a "special". I told her if she wants to improve their work to prevacuum extremely well before hand. Don't know what the special was but most likely something like a $100 house pkg.
Like Terry says, I only do one job a day, but at $1000/job its all I need to do.
We'll never get rid of the low-ballers so just position your busn so your clients know the difference and if someone wants YOUR type of work, they know that they'll have to pay extra for it.