Amazon has Zippo Rechargeable Hand Warmers for $19.9 with free shipping for prime member or on orders over $25. That´ s the lowest price for now.
- Rechargeable 5200 mah lithium-ion battery (included) for lasting reliable warmth – up to 6 hour Run time
- Dual sided heat up to 120 DegreeF/50 DegreeC operating temperature with five (5) heat settings for adjustable and comfortable warmth
- Battery and heat indicator lights
- Charges USB compatible devices including; mobile phones, Mp3 players, tablets, cameras, etc