I know the guy already bought it but for anyone else on the fence I'll give my recommendation.
For $40 the SFV + Season 1 + Season 2 Bundle is worth it. I'm not even including future, free content or changes to the network that's incoming. Just for what the game has now, I think it's worth it.
However, if you're only really interested in the single player then I'd say pass. Of course, if you're only into single player then I'd say pass to almost every fighting game because they make plenty of single player games where the single player is the focus. But if you're into shit like MKX's story mode, which I struggled to stay awake during, then SFV isn't for you. Or maybe it is. It also has a long, boring story mode.
If the concept of the game having extra things you don't have to buy charging what you consider too much is morally offensive to you, then don't buy SFV.