The most efficient tanning beds are those that use LED lights. If you have 3 tanning beds you will have a very high electric bill, however, it depends on the cost of electric where you are located.
The most efficient tanning bed is going to be a Sunquest model tanning beds. You can get these at Master Tanning @ www.mastertanning.com
a tanning salon is where they have tanning beds and stuff you can buy like bronzer an tanning lotion.
You can find an indoor tanning salon in Hawaii at the Sun Splash Tans website. Alternatively, you can find an indoor tanning salon in Alabama at the Club Sun Tanning website.
I believe you can work at a tanning salon when you're 16. At least here in Canada.
A creative name for a new tanning salon business is Sun Kissed.
In the Carribean Tanning Salon
just go to a tanning salon
You can more than likely purchase them at the indoor tanning salon of your choice.