I am at $25-35 Per app on houses ranging from 1000-8000sqft.
The postage stamps do seem to pay better since very little material is used (I am on my 3rd season with the same gallon of Confront for 25 accounts. It is said to lose some strength through long term storage, but I am mixing .9 oz per gallon instead of .75 and doing fine with no damage to turf). Most are at spot applications at this point.
Do you guys charge more to spray the whole lawn than you would for a spot app. on a property you have been maintaining ? I found that I priced some for the whole property and after a couple of seasons I am doing spot apps. at the original price with much less time and Confront used.