Board Thread:Game Discussion/@comment-86.21.166.22-20180527130115/@comment-28169398-20180528184405

Maximum Recommended PR (or required for LTS) is almost never >= series completion PR... You may have some cars that are on offer but have better options for series completion, but for the most part, to complete series, you need the car you are trying to win.

So there is no savings... eventually one day you will upgrade. And yes, you might get lucky or be patient enough to win then wait and go for the upgrade sale, but it you don't get the car, and the sale happens while you do not own the car...