After long lead time are they come after all. The lights are very bright initially and would in principle perfectly adequate for my purposes. Unfortunately, after just a week already the first lamp can be switched off not correctly set u. Then two days later completely give up the ghost. The same game was repeated with the second lamp. However, this was even broken even faster.
Conclusion: The price is indeed quite ok for this cheap junk but still far too high. In future I will therefore rather be back more focus on quality.