Plonko, when I bought mine they were not cheap. But I was desperate so bought one. Did it work? Maybe. They are pleasant and I really believe they could be good for their market: People who spend the day on their feet. But morello cherries are cheaper and it may have been them. Who knows.
Note: For muscle/joint pain bottled cherries are a good start.
20 years ago I was a mess. I am now 20 years older and less of a mess. No doctor has gone beyond the obvious so I have handled it myself with the tolerance of a good woman. It is impossible for me to say that Treatment A worked, but Treatment B didn't.