If you want show off a light so folks will be impressed enough to buy it, then don't show a dozen at one time. Nobody buys a dozen lights at once. Just show 2 to 4. The amount most folks would likely buy at a time.
Ive bought many of these lights hey work for 2 shows and after that half of the 12 lights i bought just stopped working. Even though they traveled in a professional flight case still it cant sustain travel for even 2 shows. Maybe in a permanent installation where the usage will be once in a month etc you might get 2-3 years of life. Too delicate and poorly built.