They cost about $310 and they are fairly easy to fit into a CTA (but you have to cut a couple of inches off one of the pieces). Fitting into a stock intake might be hard.
I could probably be persuaded pretty easily to sell mine used. You could buy the e-Ram and shortened CTA together as a unit. The motor has had very little real use. Maybe someone else can persuade it to do more than it did for me. After all, Brad Noon dynoed significant gains out of one.