Laserworld RS-400 RGB

I own this laser for 8 months, a red light no longer works such as diodes and are not guaranteed, I had no other recourse than to have it repaired in a workshop which took the opportunity to do some tests.
Result for the 500 RGB, mini guaranteed, 400 mw, power measured: 280 mw ...
Notice of repair: very poor quality laser, power overvalued, overvalued speed scanners to double, false advertising (the picture shows the beam of a laser show analog) while the laser is TTL (inability to mix colors to make a degraded or orange for example).
I purchased 1500 € on a auction site and thought I have got a good deal when they saw the prices in different stores online, but after information, the total price of components does not exceed € 800.
German quality is far from the rendezvous ...
Very disappointed and not ready to recommend this brand.