The best way is to understand their market. See how they are pricing. Being new to eCommerce, pricing at the same level won’t work for you. Make people know why should they come to you, not another online store. And the answer should be price. If you offer products at a lesser price than the market, people will definitely come to you and give it a try. Moreover, if you are into the custom printing e-commerce business, then you should be aware of the right pricing, especially for screen printing