Cash price. Based on how the thing was billed, I am 90% sure it included interpretation, but at this point I can't remember for sure. I don't know whether the prescription is mandatory, but I'm sure you can email/call them.
Fair rebuttal, but I don't know if medical cartels would allow AI to replace their limited supply of cardiologists so easily.
It is quite cheap here in India already (got an orbital MRI last week for $105.10, including radiologist's fees; it can go as low as $40) but having it cheaper and more easily available would help a lot more people.