I think the one at
http://hollywoodairbrushtanningacademy.com/ looks quite nice for a custom made booth and uses regular items available at your local hardware store.
One of my favourite things to do is to window shop equipment and imagine a home studio. Here are a few I like to stare at and imagine. sigh. : )
The Kahuna Bay looks awesome
http://www.kahunabaytan.com/Kahuna-B...at-p/10000.htm
The Turbo Twister Tower or the Opus 2
http://www.sunquestsunbeds.com/spray...praytan-booth/
I am dubious of "white" backgrounds with any kind of
spray tanning . I almost bought a St. Tropez mobile booth but the "white" stopped me and the price of course!