When I saw the storefront, I didn't quite know what Good Egg sold. Having been through it, I'm still not sure how to classify Good Egg. It's just a great place for home chefs and foodies.
It's half cookbook store, half kitchen supply, and half decorative to create a fun shop for home chefs. If you're looking for something, you probably won't find it, but if you're looking for anything, you will certainly find something you like. You can peruse the latest cookbooks from your favorite restaurant, then look at the Marimekko aprons. Definitely worth a stop while walking through Kensington Market.