I would not be interested in being a Nest Pro Dealer, there doesn't seem to be much of an incentive to do so. However, I've installed Nest Protects and Nest Thermostats for some of my residential customers. I provide the installation only, but they must purchase the product on their own. This way I am not on the hook should they have difficulties or technical questions. I make it clear that I am only providing installation and they must call Nest for any technical support issues. I do not stock replacements.
Unless there is a way to work out an RMR situation such as a maintenance agreement or sharing cloud service fees, it seems that becoming a Nest Pro Dealer is like installing local (not monitored) alarm systems.
I had one call back on a Nest Protect, one of two, that went off line with the customer's WiFi. The customer bought the Nest Protects at her local Best Buy and I installed them. I suggested she restart her modem, but she said her WiFi was working just fine and she did not know how to restart her modem. I asked her to log into the Nest website for troubleshooting tips and she complained that she was not that technically astute. I gave her the Nest Technical Support telephone number, she did not seem happy but grudgingly agreed to call them. It seemed she expected me to respond to her home to figure it out, free of charge, since the Nest Protect was installed within the past year. Now, I'm reevaluating my offer to install, or suggest, Nest Products, even though I think their products are very good.
Even though the Nest Protect was off line with her WiFi, it was still performing as a smoke/carbon monoxide detector. This was proven when she recently burned some food in her kitchen and the Nest Protect sounded the alarm.