Is this treadmill good for running?

No. It is a walking treadmill with a 2.5 hp motor and a 220 lb weight limit. It suits brisk walking and incline walking, not jogging or running.

How steep is the 8° incline?

Eight degrees is roughly a 14% grade, steeper than the 10–12% maximum on many budget treadmills. It adds real effort to walking, but check that the deck feels stable at full incline.

What is the maximum user weight?

220 lb. That is below the 250–300 lb limits common on full-size treadmills, so heavier users should look elsewhere.

Does it fit under a desk or bed?

The listing gives no folded height or deck dimensions. Measure the space and confirm the folded height with the store before buying.

Is this a good value?

It is very low for a treadmill with a powered incline; most incline walking treadmills sell for several hundred dollars. Expect basic belt and cushioning quality at this level.