Ember Smart Mugs with faulty charging coaster

To be clear, the mugs work to the best of my knowledge. One of the charging pins on the charging coaster has stopped working. I am not handy but this could be a great deal for someone who is or that has a working coaster. NO power cord. Ember mugs are bluetooth enabled chargeable mugs that will keep your beverage at your preferred temperature! Selling as a set, two working mugs and broken charging coaster. NO power cord.