The bala is around 5.5". About shipping costs, well I have never shipped any fishes before. I imagine they need to be shipped overnight. need to go to the LFS and see if they have some boxes to ship the fish and see how big and hoe heavy the box gets with the water and the fishes.
You can calculate the shiiping costs either at the DHL, UPS, USPS, or FedEx websites.
Ia located in Watsonville, CA. 95076