In my testing, I was also finding it tedious, which is why I added the Match button. I'm not sure if you figured out how that works (I probably should have explained it somehow). It lets you sell all matching eggs at once, which gives more bonus money and makes it a little less tedious.
ahh... that's smart. I was wondering what that button did but never bothered to press it. Mayby a build in tutorial would've helped, but you that's the thing about gamejams, you don't have time to do everything!