I did it once too...my soror took me to the salon she goes to. I remember that it did hurt a little, but I remember that the results DID last longer than just tweezing or waxing, and the price was below $10
Now that I think about it....why didn't I go back???
OK! Now I'm on the hunt for a good salon to thread my eyebrows!...anyone in the Chicago area know of a good salon??