One more thing I forgot to mention:

In my community, even non profit bike shops are required to get a business license.  If your business stores more than a small amount of flammable or hazardous material, one condition of the business license is that you may be required to receive an inspection from the city fire department to make sure you are storing hazardous material in a safe manner.

Lithium ion batteries are flammables and therefore hazardous.  Therefore, if your shop decides to start taking in eBikes, please make sure that you remain in compliance with all local safety regulations and inspections.

Gordon Hamachi, who volunteers at
Repair Cafe Silicon Valley
and
Silicon Valley Bicycle Exchange