You can get one for free. Khadas always friendly to developers 
Nope, the Tone2 is a different product with Tone2 Pro:
- Tone2: DAC only and will sell as bare board
- Tone2 Pro: DAC + HPA, and with MQA support. Will only sell as finished product.
We don’t have a confirmed timeline for Tone2 (non-Pro), but should be later Q1 2021.