Actually that particular DTI Extreme Duty lists for $1030, not $900 (unless your LGS actually can sell them for that considering the hammer forged barrel), which puts it squarely in line with the BCM M4 Mod 0 or Colt LE6920. Not the typical $900 DTI you see at the LGS as it has good specs but I'll take BCM or Colt any day!
Now here's a better question, why pay $1030 for that DTI when you can get the same specs (including CHF) in an $800 PSI?!!
Oh you have to go to bravocompanyusa for sales (right now they're not selling complete rifles I believe but you can do a build.