Steve,
There are many variables when figuring the cost of shipping....such as............
1. Size of fish. If fish are small...say under 3" they take less water therefore less weight than larger fish.
2. Destination. Where fish are coming from to where they are going. Most shippers charge according to location.
If shipping air freight, than it is usually by weight!! However most freight costs start for between 50 - 100 pounds, so shipping just a few fish air freight would cost you the same as shipping between 50-100 pounds.
Not very economical!!
Most shippers also charge a box (usually $5 - 8.00), heat/cold pack (usually $1.00 each) and some even charge a delivery fee (sometimes up to $15.00) for taking the fish to the shipper!!
Most on line dealers also have a minimum amount you must order!!
Best thing to do is to contact the on line supplier and see what shipping would cost for the fish you wanted!!
This is NOT a plug, but I have no minimum, do not charge a delivery fee. I do however charge a box and heat/cold pack fee!! Why? Because I have to buy the boxes and heat/cold packs and if I didn't charge for them, I would have to charge more for the fish I sell.
I do not ship outside of the US tho!!
CM