If you are looking for a cheap alternative, I went ahead and bought some clip ons without the bars, cut up some standard handlebars and made my own. I was able to raise the bars a good amount as well as change the angel. There is a how to on here somewhere, search on this site using "old man clip ons" or something with old man in the title.
I'm looking for recommendations for clip-ons also. I've bought a bike in Idaho and will be riding 3500 miles approx. to get home. I tried cycle cat bars a few years ago and found them to be a bit restrictive.