Hope you feel better Ed.
I just got off the phone with amazon because they would not refund me the price difference on two thermostats I bought 20 days ago because it was outside their 7 day window. Their tune changed a bit when I pointed out that I would just purchase two new ones and return the old ones (well in fact I'd return the new ones). I was granted a "one time" exemption. I guess I'll have to do the switch return in the future.