At our local mark some folks tie a wee bit of card onto the front of the cage with a full breakdown of age, sex, breed etc and just list them in the cataloge as the breed and hens/young stock. I think this would maybe be a good idea
I find that I walk round the cages to have a look and when I see something that catches my eye I then have to go through the book to see what it says (and the lots aren't always in numerical order, so it can be a nightmare to figure it out) when the info is right there on the cage it makes it so much easier.
To be honest, I think having the info there on the cage shows that the breeder is thinking about the customer and giving as much info as possible, and I'd be more likely to purchase something with a good honest description (especially if there were contact details on there too)
HTH
Karen