Price is great as well.
The price is really great. You could barely do a DIY for less.
I like a method similar to the PVC method posted. I like a length of PVC stuck in a big bucket of sand. Then fill the PVC tube with sand. For a top plate for the speakers to rest on, attach a short length of smaller diameter PVC pipe to the bottom of the plate. Slide that into the pipe stuck in the sand. Done. The precariousness of just having it balanced in the sand and further decoupled at the top of the tube is the key. Sounds really good.