A main site costing $2400 seem to offer info on schools, healthcare, maybe entertainment, etc... I believe these services are offered for a fee to the designers or hosts or what ever. There is usually a monthly hosting/matenace fee of about $40 per month as well.
I would think your sub sights could come in at the $800 range and just link back to main site for the addon services. Still at a $40 a month matenance fee (matenance fee not consulting).
Alittle over my head however I am investigating trying to bring the fees down by a third to a half. I caan't help but think the best way to go would be to hire a freelancer.
I hope you find one soon as I'm astounded by what firms are charging for what basically is a template you could buy yourself and services you could probably find yourself for free to link to.