I had the one from JoAnns, but the top broke off from the bottom stand after a while. The idea is good, but the material for the top was poor.
Like Sewnoma, I have a dining room table on bed risers. I bought a clearance table from a local furniture store, found some wooden bedrisers from Bed Bath, painted the risers, and my DH screwed the risers to the bottom of the table legs. Perfect height.
It depends on how much room you have as to what to use. The bed risers or PVC pipes will work with folding tables from Costco or elsewhere as well. I think there was a link about how to make risers out of the pipe.