I am expecting to receive day-old runners in about five weeks, and I already have people asking for the eggs. It will still be a bit of a sales pitch, though, to expand my market because of the number of eggs I will have late summer. I think if I pitch during the early summer, I will have customers when the ducks really start laying.
Word of mouth is a great advertising method - do you know a few people who seem to know everyone in town? If you can introduce them to the eggs, and they like them, that might give it a boost.