The end of January combatarmory.com* was selling G19 clone frames for $30 shipped. While I was in Florida my son bought a couple and I bought 1. He has a dealer that charges $20 for transfers so total was $50 ea. I went over to his house on the west side of the state today to see my grandson and while I was there he showed me another G19 frame he printed on his 3D printer.
The CA frame seems to be pretty good quality. The printed frame is dimensionaly the same but the finish is a bit crude. The CA frame comes with rails and locking block. The printed frame you have to supply the rails and LB.
Notice that the CA (on top) has a curved back strap, the printed one is straight.
The grip looks longer on the printed one but it's the same as the CA.
*they were also selling the whole G19 clone pistol for $219.99/then 229.99. Looking at slides, barrels and parts kits now, you can't build a gun for that.
I don't have 19, I had one back in the day but when I retired I got my service 22 so I sold my 19. Bad move.