Try the flute. A student flute on ebay will cost you about 125 dollars. Make sure you look into the company, though… If you see one that you like you can post the comapny here and I could tell you what I know about it…
You can also try the clarinet. They are slightly more expensive than flutes but if you get a student version and you check ebay you may be able to get a good deal.
Also, you can always rent an instrument for a few months to see if you will like it before you spend the real money…
Post if you have more questions…