Usually after an update with a much anticipated vehicle being added and/or a high level premium vehicle being added you see a flood of said vehicles. The F-20 has been highly anticipated and is a high tier premium in a good tree, so you would expect huge sale numbers.
Admittedly, I have been mostly playing ground since the update, but I have played maybe 10 high tier air RB matches and I have seen maybe 2 or 3 F-20s. Meanwhile, I have seen swarms of Fuji, Christian II, and even several Raam Segol tanks. I find it hard to believe that the extra $5 is the cause, but maybe there is a breaking point.
Assuming my small sample size is accurate, here is a poll for the “why”
- F-20 sales are robust & F-20s are all over the place
- F-20 not selling as well due to price
- F-20 not selling as well due to flight performance
- F-20 not selling as well due to loadout limitations
- F-20 not selling as well due to its BR (some overlap w/ loadout & flight performance)
- Other