One of the most important factors in the release of the Phillips...

One of the most important factors in the release of the Phillips device would be accuracy of results.

It would be no good releasing a product that even had 3% false results, as that is someones life on the line, and the legal system would jump all over it.

Phillips may have found there were greater than acceptable levels of false results, thus pursuing the greater sensitivity and accuracy that M&G can reportedly achieve.

This would take extra time to test every possibility and variability to ensure they have the best possible results.
I dont believe price reduction would be as high a priority as accuracy and sensitivity, that M&G can deliver.