Today, along with the addition of the new rank IX for aircraft and the related changes we discussed earlier, the research and purchase costs for rank VI+ aircraft for all nations have been reduced.
The difference in research and purchase costs for ranks VI-VIII previously and VI-IX after the changes can be found below.
nope I dont think so. I had the norwegien f16 ~300k away from competion now its 200k bc of the reduction in cost but I got nothing for the foldering of the JAS39C which I though was a thing in war thunder or any previous research. And also no SL refund.