Because of the nature of the disparate and somewhat silo-ed app stores we use to distribute STRIP on the platforms we support (iTunes App Store, Mac App Store, Google Play, our own store) we don’t have much ability to identify our customers or provide discounted pricing for bundled purchases, each version of STRIP is sold separately. We’ve tried to price the different versions to be affordable with this in mind and we believe our pricing is quite competitive. That said we do from provide discounted volume licenses for people or organizations who wish to buy a number of copies at once. Get in touch with us at sales@zetetic.net.