QHTM - Commercial version
Commercial licences for QHTM come in two basic flavours; with source code and without source code.
Without source code
You get to use QHTM in one product and for one developer only. Multiple product and developer licence prices on request.
You get all of this for just $65 (USD).
With source code
You get the same control as above, plus you get full source code to the entire library. This includes complete source code to base parser, which in turn gives you the ability to add extra tags or to use the parser elsewhere. Also, complete source code to the general purpose imaging library, again you can extend this to add your own image file formats and again this can then be used elsewhere.
As above, multiple product and developer licence prices on request.
You get all of this for just $350 (USD).
When new versions are available you will have free upgrades whether you have purchased source code or the binaries. All you do is download once again from the personal URL you were given when you purchased.
When making a purchase you get full email support. Reproducible bugs will be fixed in a timely manner and updates made available as soon as possible. I won't leave you stranded!