My guess is that if you find buyers, sell them eggs. If some one knows that you are selling eggs they would pass the word. Around here word of mouth works and some people use a local hardware store but I never asked about the financial arrangement. I imagine all localities have their own rules and regulation but what you sell out of your house should be un-taxable unless you sell commercial quantities. Local government or any government will enforce fees if you call enough attention to yourself. They are all about control and collecting revenues. Always keep quite about your business, if big brother finds out they will tell you what they want from you !