You've got some really great looking fish & I wish you success with your website sales. This is probably the wrong time of year to be selling pond fish & you'll probably do better in the springtime. Although it is better to ship right now with the temps not so hot or cold.
I just attended a pond seminar with API, and they said that fish are strongest in the fall because they are fully fattened for the winter, the water temperature is perfect for their immune systems, the water quality benefits from a fully cycled filter, and stress from high temperatures (low oxygen, high CO2, toxic ammonia) is not present. Spawning season is usually over as well.
In the spring, the fish have been torpid for months, the water temperature supports parasite and harmful bacteria growth before the immune system gets fully cranked up, and the filter is cycling up from the winter.
Most people like to buy in the spring because it is cheaper to buy fish small and grow them. Also, that is when the pond bug hits, and it is when many people install a new pond.