There you go then, that sounds like the right kind of customer to me. Your photos show that they are active, well fed birds in a clean, tidy environment. Anyone who is keen to buy good, healthy stock will place a value on that.
I only ever buy animals of farm, not from auction as I want to see the set up and meet the breeder.
If you are a responsible breeder with good stock then hang out for the right customer.
There will always be people who know the cost of everything and the value of nothing.....leave them to it.
Good luck with your sale!