unit price so compare
2 gets 64 or 7.50 get 256
grocery store 2:64=1:32=32 oz per $1
wholesale club 7.5:256=1:34.133=34.133 oz per $1
wholesale club gets you more oz of juice for the same price
A: 32 oz per $1 or $0.031 per 1 oz
B: 34.133 oz per $1 or $0.029 per 1 oz
C: best deal is at wholesale club