For around, and certainly under, $150 total cost, it would be worth it just to leave one of these in the trunk of my car or underneath a desk at work and those sort of stashing situations.
I have a Sundeal V2 Mini-Velo and, for the price, I was impressed by the general quality of the componentry. It came with Tektro R350 calipers, nice tires, and a Shimano IGH that, together basically added up to the price of the entire bike.