GearBest offers the Huanjie 12-volt 7.5-Liter Portable Car Refrigerator / Warmer in Lake Blue for $18.99 with free shipping. (Choose "Registered Air Mail - US post Registered" during checkout.) That's $5 under our July mention and the lowest price we could find now by $11. It accommodates up to 12 12-oz. cans and features a 37°F to 46°F refrigeration range, warming range up to 149°F, stainless steel interior, magnetic lid lock, 12-volt "cigarette lighter" power cord, and adjustable shoulder strap. Deal ends October 30.
Note: This item ships from China and requires 5 to 15 business days for delivery. The countdown timer on the product page does not reflect an actual expiration time and resets daily.
Most taxpayers will see their tax bill go down during 2018. That could impact which type of account -- traditional or Roth -- makes sense for you.