The length of the rods and the diameter of the flower corresponds to the product description.
The luminosity can be seen on the example photos.
The material of flower, elastic vibrating rod and rubber cap makes a very good impression, the processing is clean.
Whether material costs and (staff) plus profits for producers and distributors to justify expenses for processing the 20 euros? No Idea. Maybe set high, because it is just a decorative trend. For me as a buyer the price is anyway just so on the pain threshold of perceived value for money.
CONCLUSION
With this set of 3 like it very much, I would buy again or sometimes give ... buy recommendation.