Where do you buy a snow making machine (not DIY kits)?
Snow-tech sells little ones for around $500. All you need is an air compressor and garden hose. http://snow-tec.com/Snow-Guns/Snow-Gun-Packages?product_id=62
SSP Bowl Dude
Snow machines are very large and require 240V power, water and compressed air to run. They don't work unless the air temperature is below 27°F. I would imagine they would cost over $10k.