I would suggest you take classes and get certified first. Also you need to check your state regulations for tanning services. Buying a tanning bed shouldn't be something you just decided to do one day. There are many things you should look into before buying the bed. Have you checked for power, ventilation (so the bed doesn't run to hot in a small room with a low ceiling depending on the bed type), air condition and
insurance in case one of your clients gets burned and decides to sue you? You should get a distributer to help you with things like goggles and lotions so your clients get the best treatment for their skin. Not sure if you can find a nicer used bed for 3k. Have you checked the for sale section?