90$ is a very steep price to pay for participating in the RoF-BS development cost, particularly since you dont actually endup getting a fully finished game that gives you a couple of years of gameplay till the sequel is released.
instead you'll be expected to keep buying new elements like planes, vehicles, maps, scarfs, map building tools and SDK's etc. and that is not just a choice of adding elements you might not need/want, in order to be competitive online the RoF-BS sales model will push you to keep buying newer better planes if you want to have the hope to have a fair chance in online encounters.
the promo video also reminds me of the misleading promo video's from some MS products, with the end product not being represented in the video content (in sales terms this is referred to as the "bait and switch approach"). their map also is empty and bland (snow snow and more snow, no ground detail or significant amount of ground objects). looks very console/arcade to me, more war thunder style then anything even close to what we already have in CoD at the moment.
all by all, no thanks !! we already have much better in CoD then what RoF-BS is trying to peddle, and i wont be paying 100's of dollars over the next months to find out any different