From the article it sounds like it's "potentially" economical, ready for large scale testing. It's also a complex process - they're talking about a closed loop

From the article it sounds like it's "potentially" economical, ready for large scale testing. It's also a complex process - they're talking about a closed loop system with a supercritical carbon dioxide carrier stream and direct injection of liquid ox. Lots of pumps and heat exchangers - lots of maintenance. Unclear if they're taking into account all of that in their economic calculations, if they're being a little vague in order to pursue funding. EDIT: I am pro-technology, and not questioning their process. The article does appear to me to be an advertisement.