I couldn't think of a better way of saying it, so "stuff," it is. The most expensive things? Either way, this is a compilation of most expensive stuff I have come across recently, all for folks who don’t know how much a gallon of milk costs. The consumer goods are all in-production and available to buy. No esoteric vintage, gold-plated speculums here. These are also available for private ownership. I am sure a US aircraft carrier could be considered one of the "most expensive," things so I have discounted stuff like that. They are in no particular order, although I have left the most expensive "thing," to last.
Most expensive motorcycle
The Ecosse Moto Works' Limited Edition Titanium - $275,000