I recently acquired my first 47s light from eBay
It is a great little thing for only $19. It is used as a two-mode light, both modes selected from several preset modes. Head tighten for one mode, loose another.
Right now I have head tighten as turbo, loose as 5lumens. Works great for me. It also has a sub lumen mode for moonlight lovers. Simple and reliable.
Best light for the price.
Btw, seller allows name your price, I offered $16 and was accepted immediately. Shipping is $4. Fast shipping.