Northern Tool offers the Klutch Heavy-Duty Portable Electric Pipe Threader for $399.99. Coupon code "255830" drops it to $379.99. Opt for in-store pickup to dodge the $29.99 shipping charge. That's $20 off list and the lowest price we could find. It can be used with a gas pipe between 0.5" and 2" in diameter. Deal ends November 22.