How is my $30 cable bill "divided up" by costs? Itemized expenses?

(see subject) I don't have cable anymore. But when I did, nearly all
80 channels were >commercial-supported<, so I'm guessing my $30 a month
bill was divided up like this:

.

$0.00 - local stations 8/15/27/43/et cetera
$0.00 - ad-supported stations like TBS, TNT, CNN, Sci-Fi, TLC, ...
+
$5.00 (1/each to support no-ad stations like Turner Classic and C-SPAN)
$10.00 - installation & maintenance of the actual cable/relays/...*
+
$15.00 - to the rich Comcast Cable CEO's vacation account

Is that about right?

;-)

No, seriously, does anyone have the breakdown of costs for the bill?
Ya know, I'd be perfectly happy to Throw Away the "no-advertising"
stations like TCM and CSPAN, to reduce the bill to $25, or even $20 a
month. (The reason I dropped cable was lack-of-money.) So I'd
appreciate it, if someone could share the actual cost itemization?
Just curious.

.

* (Baltimore's Comcast charges $7.00 a month for limited 15-channel
service. Lancaster's Comcast charges $12.00. So I'm guessing the
ACTUAL cost lies somewhere in between. Around $10.00 for maintenance.)

.

Now that I have no cable connection, it's a relief not to have that
monthly bill. I still get a wide selection of channels (~10), but they
are all FREE. Less time spent at hell/work.