A critical element of a free market is competition. Without competition you don't really have a fully functioning market mechanism at work.
So in that sense there is not a properly functioning market.
Comments in this discussion seem to fall into two categories:
1) free market has failed, lower the price via administrative fiat
2) free market doesn't exist, adjust regulations to encourage competition
One suggestion I have is to simply allow non-FDA approved devices to be sold but to be clearly labeled as not having been evaluated by the FDA. This would allow the market mechanism to put pressure on the FDA approved vendor. Re-thinking the FDA approval process is also a possibility, or even providing different types of FDA labeling (e.g., experimental, provisional, approved) based on different stages of the FDA process.