it really depends on your situation, lets say you are now paying 148, and you are still in contract, suddenly, they increase the price to 168 for all new customers, do u think they supposed to increase your price ? Why when the price goes up need to stick to the plan and the price goes down, must benefits you ?

same as buying house, after taking loan and purchase, the house price drop by 20%, do you think u can ask the developer to refund you 20% ? or the house price later increase 50%, u think the developer can ask for 50% more ? use common sense, thats the reason of contract, u signed it, u need to stick to it.

I am paying 118 for maxis 10mbps, the price went up, they didnt charge me extra, so a contract is a double edged sword, it protects both party, not just the customer or the ISP.