Ebay offers Ember 14-oz. Temperature Control Smart Mug² for $120 (reg $149.95) with free shipping.

Product Description:
Ember Mug² 14oz Blue Edition is a brilliant new take on Embers classic smart mug, and is guaranteed to make every morning shine. Ember allows you to set your preferred drinking temperature (120°F 145°F), so you can enjoy your hot drinkjust the way you like itfrom the first sip to the last drop. Ember is not a simple mug warmer. Ember Mug²s built-in battery maintains your chosen drinking temperature for up to 80 minutes with the built-in battery, or all day with the included charging coaster.