I am not against the idea but also in the US they are quite reasonably priced. I had to pay shipping to far away, shipping was almost as much as the rings.

The point of my post was a that its a null-experiment (AKA - don't bother trying it because it wasn't that exciting). If I don't share the fact that it was actually not worthwhile, someone else motivated to do it won't know it has already been reported on.