Actually, the SAS guys will be retrained on the replacement aircraft that SAS is getting which are MD87, CRJs and some AVROs (not specified which ones in the press release)
Needless to say that the company of course pays for all conversions.
No. Only 30% of the Q-800 pilots are getting retrained.
About the price, it's about the same as any TR, as mainly it's the simulator hours+6 touch & go's.
Demand is less so price may be slightly higher: 25000€ is a good price.