Colman has informed me that all discounts will be applied to shipping and the remaining will be refunded within 48 hours. If you need it within 24 that can be done as well. Just add a note with payment.
60 mm total thickness it says. Damplifier is 40 I think, and Damp Pro is 80 mm total (not 100 percent sure) but pretty confident in my memmory. The charts show it works very comparable to damplifier at roughly 1/2 the cost.
I would assume we are all just going to send payment seperately on 5/13 within the given timeframe. Then they will have each person's shipping info, and be able to apply the discount to each order accordingly with no middleman.