DSL -Digital subscriber line  is offered  at 1.5 mbps each way for $19.95 per month and at 8 mbps $39.95 per month. 
In general DSL prices usually runs between $25.00 per month and $60.00 per month.

ADSL and SDSL (High End Digital Subscriber Lines) Starting From $59.00 per month.
In general ADSL and SDSL usually runs  between $59.00 and $79.00 per month.

T1 starting at $212 per month.
In general T1 lines run between $212.00 to $1,200.00 a month.

T3 (which is a combination of 28 T1 lines) starts as low as $249.00 per month.

Full OC3 service usually is priced between $15,000.00 and $100,000.00 per month.