I have the lite version installed for testing; it allows the user to decide canvas dimensions which is great. What I need to know is if you can set the app to charge by the square foot/meter based on the dimensions set by the user.

What we are trying to do is build a system for users to create custom decals, wall prints, banners, etc. but we need to be able to set substrate options and costs based on sq. ft. (ex: $6.00/sq.ft. x (Height x Width) = $Y.00) and have the final total handed off to the cart system.

I have also noticed a bug in the designer. The canvas disappears when you hit save.

UPDATE:
1. Your software refuses to upload images or import them from a URL.
2. The Canvas disappears when you enter custom dimensions, hit save, or click certain buttons. Getting it back requires hitting + then - several times. That's not a feature, fellas.