Hello- On places like eBay and Amazon, one sees a lot of ultra-cheap, under $15 laser pointers in various colors. For example, my favorite green astronomy laser cost me twenty dollars from amazon last year. Contrast these prices with laser pointers from more respected brands, which seem to range in price from $100-$300 dollars. What exactly is one paying for here? Do the more expensive, brand name models have some attributes that make them better for certain purposes? For example, when shopping for my astronomy laser I considered a $105 Orion, but I settled for a $17 Hong-Kong-sketchy model that seems to work just fine and be as bright as I need it to be. I am currently shopping for a violet or UV spectrum laser, and I am again tempted to just get something cheap.