Buying cheap tripods is an expensive exercise, as you pay for the cheap one as well as the decent on you then get to replace it.
It's much cheaper to just buy a decent one.
By all means shop online, but try them in a store first to make sure :
(1) it's tall enough not to drive you nuts (stooping gets boring fast)
(2) it's stable
(3) it's solid enough for your heaviest gear
(4) it's stable
Think putting it on a sandy hill, with the wind blowing... confident your camera won't end up hitting the deck? If not, don't buy it!
Gitzo and Bogen / Manfrotto are excellent, but there are several decent brands below them that are adequate. I've never heard of or seen 'fancier' tripods.