I don't have high hopes for my first hatch. It might be my fault for candling almost every day...
Of my 10 silkie eggs, 5 have veining, but I only see movement in one egg. Of my 13 mixed eggs, I only see development in 3-4 eggs. (Some are dark colored eggs, but I can see veining in two of the dark ones, blue and Marans.) I think that is just because the veining is by the air cell, so it is easier to see if I put the light by that. There are way more that look clear than don't, and the mixed eggs were not shipped.
I do hope that we get at least a couple chicks out of the deal.