I bought three boxes of sound deadening, each box is 36 sq ft, so 108 sq ft total. I bought five boxes of sound insulating foam, each box is 20 sq ft, so 100 sq ft total. I can't say how much I've used, because I'm not finished. I'm still planning on treating the doors, the rear quarter panels, and the rear hatch and tailgate. The quantity that I have should be enough, based on some rough measurements that I did beforehand, but it's possible I'll need to buy more to finish. I can't remember the cost, but it's all Noico brand from Amazon. The sound deadening is 80 mil and the closed cell foam is 315 mil.
Cheers