I spent years completing this collection. I didn't try that hard to be honest because the key piece was always elusive: The Marvel Value Stamp booklet itself. I have found them in the past, but those booklets were always filled or partially filled with stamps already.
I wanted an unfilled one.
Thanks to a recent acquisition off Heritage I obtained my booklet!
I attended the Edmonton Comic and Entertainment Expo this last weekend ( see here for the write up: http://boards.collectors-society