They can be hit or miss. Pay attention to WHERE the event is. Small, rural, hometown craft fairs are a huge no for me. 2+hours of setup and a day off from my full time job for only 2 or 3 small sales. I have to travel at least an hour from home to make any money. Have a style or niche. Mine is witchy, alternative style wearables and occasional two-headed or cryptid plushies. You don't have to make EVERYTHING. You can pick and choose what items you like to make and that will become part of 1/2