Board Thread:Game Discussion/@comment-69.133.107.106-20160809173322/@comment-28176349-20170313221211

Details are on the different Exclusive series pages. It depends on where you are with the different cars. For me, they tend to offer more bang for the buck than other series. That said... it's not profitable. I'm regaining 1/4 to 1/2 a gold for every gold spent upgrading.