I realize economic hard times require a flare in salesman ship but I have to take issue with a few things. The first one is the scare tactic about price and availability. Price wise r22 costs exactly $1.11 more per pound than r410a. Availability wise, r22 will be produced until 2020 although at a reduced rate as you said. How much the price will actually go up is based on a guess but Im willing to bet as r22 goes up r410a keeps pace.
The second one is the quantity of r22 in a 10 seer system vs r410 in the new minimal seer rating of 13. The 22 system held (arco aire) for instance 4.25# of r22 where as the new unit of the same size (2.5 tons) holds 4.10# of r410a. Not even close to half. The cost differential to fill both systems is less than five dollars.
That being said, sometimes I read some of the stuff here and wonder, is it mere ignorant misrepresentation or borderline dishonesty. I also wonder if sometimes when these sales pitches are given if you can actually see the sales mans nose growing.