$16? For shipping I think that is a bit high it won't cost more than $6 to $8 to ship you can put in a flat rate padded envelope from post office for $5.95
I don't think it would fit into a padded envelope. It has all the tulle underneath and it's a bit puffy, and it would wrinkle the dress. At least I think it would. I priced it based on using a box to ship because I wouldn't want it to get ruined.