your parents pledged not to love you? lol..
I bought my 1GB on my motorola backflip for approximate $4.5 per month and I only used about 250MB so far for the first month.
I surfed online bank websites, forex and sgforums occasionally. Basically, why don't you just opt for a cheaper student plan phone and get the 3G data plan seperately?
stop being so whiny lah.