Yes to commercial use of bonus .png files!
I've recently been asked a number of times about commercial usage of the bonus .png files offered as an add-on to the Schleyscapes adventure. Here's the scoop:
While the main Episode 1 PDF adventure is not to be redistributed or used commercially, the individual .png files that come in the bonus suite are fair game for making your own publishable maps. In other words, the maps you make with the separate .png files offered at the $20 and up pledge level can be used for homebrew mapping or in your own published adventures. The only requirement is that you include a byline mentioning the creator (me) if the resources are used in a commercial project. How's that for a bonus? ;-)