https://www.amazon.com/dp/B00D8P5T0...11f1920ac2619856c3190INT&m=ATVPDKIKX0DER&th=1 4-Count Energizer CR2032 Batteries for $5.49 - $1 when you 'clip' the coupon on product page - 5% when you check out via Subscribe & Save = $4.22. Shipping is free with Prime or on $35+ orders.