Shipping by USPS priority mail is for individual items in USPS priority boxes.
Call or email for postal charges on larger sizes and/or bulk purchases.
Pick up and delivery is available in certain areas.

Example: One 12 ounce bottle ships in the small box for $7.50, the large can hold three 18 ounce bottles or four 12 ounce bottles for $17.60. Including other farm items in your purchase will reduce the number of syrup bottles that can fit in the larger boxes.

USPS listed prices for priority flat rate.

Small Box8 11/16" x 5 7/16" x 1 3/4" $7.50
Medium Boxes11 1/4" x 8 3/4" x 6" or 14" x 12" x 3 1/2" $12.80
Large Box12-1/4" x 12-1/4" x 6" or 24-1/16" x 11-7/8" x 3-1/8" $17.60