If im buying a phone from online at boostmobile will i have to pay for the phone plus the first months service?

the phone is 99.00 with free shipping..but i want the 50.00 a month plan so when i order it online will i have to pay the 99.00 plus the 50.00 or just the 99.00?|||yes unless you dont want to use it. the 99.00 is just for the phone no service. i have boost and have the incognito its a good phone =)|||na buy your phone form www. 20kheart.webstore.com