We picked up several hundred square feet of this yesterday at BIG NYC for less than a buck a square foot. The entire back of the car is piled high with the stuff.
It's 3" width T&G. I think it's oak, but I'm not entirely sure. It's too dark to be maple. Heavy like oak. I wonder. Doesn't really matter.
Plan is to put it in the entry foyer and on the upper landing - I figure we'll have more than enough.