GearBest is organizing a promotion for its US warehouse, and there are three good deals for TV boxes, especially with Rockchip RK3229 based SCISHION V88 going for $13.99 (limited to 30 units). Make sure you only buy one, as usually, the company will cancel orders with more than one piece for this type of promotion.
If the 1GB RAM in V88 is too little for you, you may consider V88 Plus model with 2GB selling for $17.99, or Dolamee D5. There’s also a $10 discount$10 discount on Yundoo Y8 RK3399 TV Box. They also have some other discounts for 3D Printers, and drones/rc toys. All you need is a physical address in the US.