Can you explain current licensing and support and maintenance scheme for WCS3?

Current product is Web Call Server (WCS3) with such set of features:
1. g.729
2. transfer, hold
3. IM
4. DTMF
5. WebRTC, Flash

Prices: https://flashphoner.com/prices/

The unlimited license is designed for one hardware or virtual server.
It includes 6 months of support, updates, bugfixes.

Support
1. Next business day response.
2. No strict deadlines for bugfixes.

Next 6 months support, updates and maintenance package cost is 50% of the initial license cost.