depending ,even with your own site it depends on how much money you make if you can write a tax write off. also the way you recive clients, if you are a professional business or hobbie, weather or not you have a phone number clients call return policies and agreements about your products to protect you from being sued if the client receives a damaged product.
do i need a business license to sell online ( not on ebay, on my own site) if i do what kind of license do i need, im in ny if that helps
