Walmart offers the Thetford Porta Potti Curve Portable Toilet in White, model no. 92360, for $84.96 with free shipping. (Amazon has it for the same.) That's tied with our mention from a week ago and the lowest total price we could find by $22. It features battery-powered flush.
Wow. Great price. After a ton of research and couple years ago we bought this model for $125 on Amazon. For our off the grid property where we car camp.
Very nice design, good height unlike some more compact models.