You're going to have to be a little more specific, or increase your budget. Otherwise, this one technically meets all of your criteria: http://joby.com/store/gorillapod/slrzoom
Check out Walmart (or similar stores) for cheap ones. Ebay too. I'd suggest increasing your budget however. A good tripod is something which you can hang onto for a long time. Chances are, you'll out-grow whatever you buy for less than $50 within a year.