Do you have standard package quantities, I’d like to combine purchase items and economize on the shipping cost?

Depending on the package size there are 3 options that are most economical sense.

Padded Flat Rate USPS Priority Mail Envelope will hold 1 pair of adults or 6 fry.

Medium Flat Rate USPS Priority Mail will hold 6 pairs of young adults or 24 fry.

Large Flat Rate USPS Priority Mail 9 pairs of young adults or 36 fry.

Trio of Tiger Endlers Packed in a Heat Sealed Kordon Breather Bag
Kordon Breather Bag Satchels
Styrofoam liner installed within a USPS 6x7x7 Priority Mail Box
Styrofoam Lined USPS Box