Cheap Treadmill With Incline (Kizkiuz.Com) When you are running or walking on a treadmill having an incline option can add variety and intensity to your workout. A quality incline adjustable model is expensive. Fortunately, there are low-cost treadmills that can be incline-able. These models come with a range in incline and speeds from 12mph up to 12%. 1. Sc...