Trader Joes Cocoa Truffles....8.8 Oz. Box

why are these soooooooo expsenive on amazon? they are about double what i just paid at a trader joes.

is the outside cocoa bitter/sweet?

Can you guarantee these won't arrive melted?

I would like to order 4 boxes. i'm in boston. i want receive it before aug.17. do you think it's possible?