Do you have $2K to front for the materials and turning/knurling?
Oh, and are you going to do the range testing and provide the ammo as well? That's another 2K easy. Oh wait, it's ammo no one wants. Make it $1500.
There's a sizable investment made in these before ever being offered for sale. I got lucky on the .30's design, but the 5.56 took some tweaking before I got it right and that took a lot of ammo to prove out once I thought I had it.
If I had a flaming STD it would be an unsuccessful test and might as well be a Claymore or KX3 (although both are still heavy and over priced). I may run a special batch for RFB's (if they work) because the threads are exceptionally long on that barrel and it's an ideal application for the technology. I had to make a 3/8" spacer to get the STD to fit the muzzle where it should be, and that might prove to be the wrong spacing when I test fire it - time will tell.