As with any new technology, there's going to be a large cost involved with the development and research in the early stages.
Reading the article, it seems that the patient can only receive their original T-cells, but with enough experimentation and development, it may be possible to create a 'generic' T-cell that is close enough to natural T-cells to be accepted by anyone's body.
If this is achieved, then it's just a matter of mass producing the 'generic' T-cell. It might even be possible to create a 'generic' T-cell that causes a mutation in the CCR5 cell in existing T-cells to render those cells inactive, which means that only a small amount would be needed per person.
If we can advance the process this far, the only remaining problems would occur with patients or people being innoculated who have naturally occuring mutations or extreme differentations in their T-cells that prevent the developed T-cells from working properly. But by the time we reach this hurdle, it should be easier to develop the necessary T-cells for those people as required.
Just a thought.