We sell Hanamint furniture - so I have a towel tree from them. I love it! We don't sell many of them, but they are very nice. It is cast aluminum, but it has a cast iron weight built into the base. If you live in a high wind area, or want a fancy piece to go with cast iron or cast aluminum furniture, check these out.
We sell them for around $170 - delivered to the local area free. I don't know if you could find them locally - but it would be worth a look. They are very well built, and can be set with the rods at 90 degrees or parallel to each other. There is an oring in the tube where it pivots to keep crud out, and the finish is excellent. We chose the color to match our patio set, but I think they are available in other colors.
http://www.hanamint.com/gallery1.htm Try to find a local dealer.
Sorry, but the picture is not to scale. The towell tree is about 52" tall.