I have been using this sprayer for a project I have in the works and I love it! I needed just the right shade of blue and couldn't find anything close in spray paint, so this has been a life-saver. It allows you to turn any paint into spray paint and costs about $5 for the unit.
Replacement aerosol cans are also available for around $4, so this can be used over and over again. Brilliant!
P.S. I was checking out the company's site and discovered that it can also be used for pesticides, spray tans, and weapon finish! I don't know about you, but that just about covers all my needs! :)