@audio_bidder -- besides the exposure of physical damage or theft, don't forget you'll probably also want to purchase general liability coverage. There is the chance the unit's power supply could be damaged in shipping and end up shocking someone or starting a fire in their house, with them suing you. Even if not directly your fault, you'd still be dragged into the claim.
Your homeowner's policy would probably not provide coverage as HO policies typically exclude business operations. Without a GL policy, you'd be left to pay out of your own pocket the legal fees and any damages that result. (And, as a commercial property & casualty broker the past 40+ years, the odds of you find affordable property and liability coverage for this type of business operation as likely very slim.)
