I believe it was $140 shipped off of E-bay. I think the only difference is the 106 comes with a 4 gallon -ish pressure tank that lets you have 4 gallons on hand at all times ready to use. I think it was originally designed for the drinking fauct it comes with, but it works great for topping the tank off! Otherwise I typically get 3-4 gal/hr at the "trickle rate."
