Agreed the 40 beans is a lot for the bunker set. It will, however, cover the full perimeter of the 3x3 floor though, so it is a lot of card.
As a note, as the time was counting down and the last of the stretch goals fell, the folks of BS were chatting about costs and it seemed pretty apparent that they were not going to make any money from this KS. They plan to use this as a launching pad to producing card terrain.
Yep, pricy, but it will get them all the tools they need to produce the kits for retail and hopefully make some money in the future.
This is the kinda thing I believe KS was designed to do, get folks started, not serve as a pre-order special or generate profit by selling shitty plastic.
Overall, I'm quite happy, both for myself and for them.