reaching out from the in-between spaces...
I missed kickstarter promotion, so will I have to scour ebay to complete my game, or were the extras in KS just bells and whistles?
There is plenty in the retail base game to keep you happy. Some of the extra's were bells and whistles, but most were variety in gameplay (different zombies, nemesis and creatures).
I think only 1 type of zombie and 1 of he survivors were semi-KS exclusive. Everything else will be available at some point, so there is no need to scour ebay. Pay half the price of the KS, and if you like the game, you'll nab the extra stuff as they get released.