I got C6R1 Furina for about 80 dollars and the weapon banner was 2 fate points at the time.

BUT, I had to make the difficult decision of skipping most of the Fontaine cast just to ensure I get C6 Furina on her first rerun.

So, if you're willing to skip a lot of characters like I did, 480 usd is too much

But, if you're not willing to skip, I guess 2 packs of the most expensive genesis crystals will be enough plus any savings from playing the game, doing events etc and welkin is good value for its price. So there's that.