I'll be the black sheep and try to help you find some poles other than LT'4s (though I will admit, they are the sh*t, and worth the investment...maybe scour gear swap for a better price).
As far as getting poles that are lightweight and within your price range, how about these?
Sign up for their deal flyer email coupons, save anywhere from 20-30%, and you're set.
Depending on how tall you are, you might be able to pull these off. They weigh 6.7 ounces per pole. My gf uses these, but they are long enough for me (5'9"). The grip is a bit smaller, but I still find them comfortable (size Med glove). The price is cheappppppp, and the weight is light, its a good alternative if it fits you
Rei poles are made by komperdell as well.