If I get a real dirty egg, it is washed and goes into the "broken" carton in the fridge. Any egg not fit for human consumption is boiled and refed back to the girls after being thoroughly crushed for them to eat.
If an egg is pristine, I use it and would resell it as is. If a smudge, I clean only that area if possible. I try not to wash the eggs if I can avoid it to not lose the protective bloom. If too smudgy, it goes into a wicker basket in the fridge for my own personal use. The egg customers get the best ones.