Board Thread:Game Discussion/@comment-28169398-20180112153205/@comment-31433854-20180112165717

From the sounds of it, you will be able to complete the new FE 2017 (or whatever it is called) series with one car. I suspect the purchase prices will drop in 6.1 as well, but probably not to the sale price. It might be sensible to get 1 (ABT). Of course, it might also be sensible to wait and see how the new system works and if it is worth doing. Clear as mud :)

The RSR will cost 176gc or 308gc to upgrade to 84 or 85, respectively, with the sale (assuming no upgrades). If you want to upgrade more than that than it does get expensive.