Direct from the source, Comcast Cable Law Enforcement Handbook

Depending on how many taps are being done, this could be enough revenue to affect the bottom line.

Excerpts:

Internet Compliance: Reimbursement Fees

Costs for the implementation of a Court Ordered Pen Register/Trap and Trace
compliant/FISA requiring deployment of an intercept device are as follows:

• Intercept: $1,000.00 initial start-up fee (including the first month of
intercept service) and $750.00 per month for each subsequent month in
which the original order or any extensions of the original order are active.

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Voice Compliance: Reimbursement Fees

Costs for the implementation of a Court Ordered Pen Register/Trap and Trace,
Wiretap, or a CALEA compliant Order are as follows:

• CALEA intercept: $1,000.00 initial start-up fee (including the first month
of intercept service) and $750.00 per month for each subsequent month in
which the original order or any extensions of the original order are active.

• Call Detail Record releases in response to ongoing Court Order: $150.00
per week for once-per-week delivery of incoming and outgoing call detail
records for the duration of the original order and any extensions of the
original order. More frequent delivery of call detail records is an
additional $50.00 per delivery.