Just curious to see how the price varies and how you guys calculate the price per block. I've only built 3 walls so far and i've used Versalock Square footers which are 8"x18"x12". At this point i've not yet charged by the block but by the man hours put into it. I've made out pretty well but now i'm getting multiple calls on estimates and i don't want to bid my self short! Any input wold be greatly appreciated.