How much does Billy cost? Tom P 01 October 2019 05:49 Updated For Billy pricing information, head here — www.billycare.com/buy-now/ Billy is yours for as long as you want it. And you can cancel, quickly and easily, at any time. Related articles What batteries do the Billy sensors use? Where can I buy batteries for the Billy sensors? When will I receive my Billy order? When does the billing cycle begin after I place my order? How will Billy know if I'm home or away?