I do not decide on who tests my water by who provides a label or not. It is far too important (and expensive) to me. But postage is a major cost factor. So is shipping time.
This company is located in Bavaria, Germany, and seems to have a successful coral farm, which seems to add to their credibility. However, their ICP still needs to be shipped to Germany, which needs to be worked out by them to run smoothly, and could cause delays.
I have ordered three different Oceamo sets from the last moonshiner sales (OES, MS, ORGANO), and will try them next year. Even at a regular price, these seem to be the best value for money (including pre paid shipping) since, at least for Europe, their test results have never been debated/questioned. Oceamo and Fauna are the labs to beat in my opinion.
There are a lot of shortcuts possible with ICP, and I would not rely on just any labs results to make corrections.