In the original article (PDF, free to download after you register) I find:
"The artificial connectome has been extended to a single application written in Python and run on a Raspberry Pi computer."
This gives us an upper bound of about 1.5MB ram / 100KFLOPs/10 cents per neuron. Possibly a lot lower.
The connectome for the 302 neurons of the nematode C. elegans was put in charge of a Lego robot. Without any additional programming, the simulated brain started using the robot parts just like the original worm's organs.
"When you think about it, the brain is really nothing more than a collection of electrical signals."