I got a commercial grade treadmill via craigslist, there are tons of them out there and most inclusive of port(s). Many re-manufacturers offer decent warranties as well. You will likely get a better treadmill in terms of feature set, speed, motor... albeit bigger and heavier. Many of the houses here on the west coast will let you come in and have a pick of the lot inclusive of test ride:)

Probably the way I need to go. Wahoo confirmed the pro form 2000 doesn't have the csafe port.

They did also confirm that Time and LifeFitness will have consumer treadmills with the GEM built-in coming to market in the next couple months.