digital cable questions

i wanted to know what it is broken up. i think we only paid 45 to adelphia/comcast, but comcast site says 50. then the lady on the phone says it’s only 5.xx more for the starter pak for digital and 4.95 for the sports pak with speed channel. so for 10 dollars and some change i’ll have basic digital with the sports package. this sounded to cheap. i always thought it was 20-30 more for digital