The high price of an ultrasound setup has nothing to do with the desktop PC component. Ultrasound probes are the specialty part of the hardware costings, the clinical know-how for the software is another expense, compliance is another, and low turnover contributes yet another.
Similarly, 'just sell in developing countries' is an utter throwaway line for medical devices the way you're using it - and you'll find that these products already do sell in such markets anyway (what a novel idea indeed!). Not to mention that developing countries have extremely limited medical budgets, and 'allied health' stuff like ultrasounds are luxuries - they're available and have sales teams, but the turnover is extremely low.
Similarly, 'just sell in developing countries' is an utter throwaway line for medical devices the way you're using it - and you'll find that these products already do sell in such markets anyway (what a novel idea indeed!). Not to mention that developing countries have extremely limited medical budgets, and 'allied health' stuff like ultrasounds are luxuries - they're available and have sales teams, but the turnover is extremely low.