Depends on the local demand. As a starting piint, find out how much 'nice'' eggs are going for in your local shops, or from any other occasional sellers at the garden gate, and don't be afraid to charge more for 'proper' eggs from garden hens. Make a sign which demonstrates the superior freshness and traceability of your lovely eggs. I've found that people really like to know the names of the hens involved, eg ' Lovely fresh eggs from Marigold, Nutmeg, Saffron and Ginger' and ask after the girls by name! Once people notice they are there they will sell quickly. Work out how much each egg actually costs to produce (cost of a bag of feed divided by the number of days it lasts divided by the number if hens, whether in lay or not, plus an allowance for bedding, wormers and other expenses.) mine work out at about 15p per egg, so I charge £1.50 for 6 and have no difficulty in selling them. Mind you, I only have a few spares in summer when they're all laying, as I haven't got enough hens to produce a lot of extras. How many do you expect to sell each week, com how many hens?
Of course if they don't sell, you can always reduce the price, but if you set it too low at the start and they all sell within 10 minutes its difficult to increase it!
I expect it also depends on how much foot traffic you get past your house. If not much, try a little flyer to your neighbours, who may like a regular boxful if you can deliver them.