Hi Richard,
I can't remember exactly but I think I paid about $40 for a 4 x 8 sheet of 3/4".
I don't know how the ultra light compares to trupan because I've never tried trupan. I do know that I'm on my second sheet of ultra light and I am pretty happy with its performance as a spoil board.
I am using 2 Feins as a vacuum source.
Scott