as luck would have it, 3M has an office less than 5 miles from my office. I picked up a sample sheet of their ALCF-P ABR2 (vikuiti advanced light control film, light hardcoated matte front surface) during my lunch break today and I will report with my findings (and photos) this weekend
I believe that this is the same product that pinball pal was selling (at least according to the korn's comparison page)
if this suits our needs, based on the costs, I'd have to get at least 40 people (or a total of 40 pcs) together since the film is *only* sold in kits of a minimum of 10 sheets (each sheet can be cut down to make 4 filters). for the 10 sheet kit, I would be able to match the pricing of $40 per filter (plus shipping) that pinballpal.com used to sell the film for, but only if I can get close to 40 people to go in on it (this stuff is expensive!)
if I can get close to 150 people (or a total of 150 pcs), I can get the pricing down to $30 per filter (plus shipping)