BLDC motor and driver design - 120V

Hello, 

I am looking to use a BLDC motor to drive a fan load for a consumer product. I have a few questions about such a system and would love some help, 

- I don't see many motors or drivers that are rated for 120V. I am curious if this is just a demand reason or if there is a design limit or issue that I am not considering

- I also need help with determining whether measuring back EMF will be feasible for this application or if I need to consider estimating back EMF 

some specs that we currently have:

- 80W load

- 15000 rpm