In looking over the list of presets in your "Teaser" download, that's a lot of presets! I somehow missed the "53 banks" in the original post. Easily well worth the $40 and then some. You could surely charge more than that. I'd take them all at that price and think it was a real deal. You might get more sales with a lower price but considering the quality of your work, and the number of presets there it's a bargain at $40!