1. Don't be related in any way shape or form to any of the people currently blacklisted in the audio world for fukkin people over.2. Carry a legit product, that is better than at least 50% of the market.
3. Price it to be more than competitive. You have to price it so people want to buy it to try it.
4. When products go south, you better have the bank or products to replace, repair, or refund the customer.
5. Be fast with the service, replies, shipping.
6. Don't B.S. people with outrageous claims on anything. Be absolutely honest and up front.
Follow that and you will do well.