Sell from Blog lets you sell your ebook or software package via premium SMS payments.
It works with every service which provides you with a set of codes and lets you check user input against them by yourself.
I tested it with:
Currently, the plugin supports selling only one file at any given time. Therefore, it's only good for people who have one ebook or program to sell on one blog.
No, it can be of any type (pdf, exe, zip, doc, etc.). But it is a good idea to compress it, because there are limits to the size of email messages (often a message must be less than 10MiB).
Yes, you can add your own custom (promotional) codes.
I will add support for remote validation in future versions. You can help by sending me links to technical data of your service provider.
This plugin is gettext-ready. You can easily translate it into your language.