I plan to buy Motorola Droid from craigslist without contract. Then I plan to go to metro pcs's store to see if they can flash w/ internet working. If they cannot, I will go to another store called web communications which says they can do it w/ internet working. Then I plan to use Metro PCS $40/monthly plan. But metro pcs says its $50/month for smartphones in the website.. so will I have to pay $40 or $50 monthly?