I'm sorry for your financial situation. You can blame those of us who have been pressuring Comcast to increase the amount of digital service that they offer to us. We've pushed them to reclaim a lot of the bandwidth that they've previously devoted to providing you the analog service that you prefer, and redeploy it to serving our needs instead. Actually, Comcast has been lagging behind in this regard -- all their competitors had done so earlier. So essentially, with Comcast now finally heeding our demands for more digital service, that will typically bring an end to the availability of analog cable service in a specific area. It is unfortunate that folks like you end up holding the short stick.
Since money seems to be a big concern with your family, you should look into the service level we have recently switched to in order to save money: Digital Economy. Digital Economy is about $30 per month for a small set of cable channels: A&E, AMC, Animal Planet, BET, Cartoon Network, CNN, Comedy Central, Discovery, Disney, E!, Food Network, Fox News, Nickelodeon, Lifetime, Spike TV, USA, Weather Channel. Digital Economy comes with one cable box (or CableCARD) so that provides us all those channels on one outlet. With Digital Economy service, though, I'm not even entitled to any DTAs. (They're only good for the service level one level higher than mine, Digital Starter, and above. The old service level called Expanded Basic is also "higher" than Digital Economy, so you would get DTAs with that service level -- essentially Expanded Basic is just Digital Starter without a digital cable box.) On the other outlets, without cable box, CableCARD or DTAs, we just get the local over-the-air broadcast channels.
I know you have more televisions than that, but the way we figured it, to save money, we can just rely on the one outlet for all the cable programming we care to watch, and just watch local channels (or DVDs, MRV, etc.) on the other televisions.