I assume that service would only cost ~$10/month, because that's what Apple currently charges for Developer accounts. The 30% per transaction only really makes

I assume that service would only cost ~$10/month, because that's what Apple currently charges for Developer accounts. The 30% per transaction only really makes sense for apps for which Apple has provided the advertising, distribution and processing -- the App Store. I'd love to just provide a direct download for my customers who also happen to be Apple (device) customers.