The concept is good and practical, convinced the cleaning performance. The opening of the cartridge is recommended only in a stable position, otherwise the cleaning liquid may spill. What bothers me is also the nonexistent closure, so that the alcohol evaporates or can spill over when moving out of the station. The price-performance ratio (alcohol + plastic) is probably explained exclusively by a lack of third-party manufacturer. The production of avoidable waste (Alternative: refilling) can forgive me three points with a heavy heart.
