I've made a Babysitter mod that comes in 6 flavors, combinations of 4 options.
+adultonlybabysit.package [May be installed by itself or with other flavors]
Socialist Child Care - Modifies the babysitter resource to reduce the daily price of service from §75 to §10. This option is incompatible with any other mod that modifies the babysitter. This option is compatible with Babysitter is Recurrent if proper flavor is installed.
Bill Increase - Modifies the mailbox resource to increase the twice weekly bill from 1.3% of household wealth to 1.7% of household wealth. The option makes the Socialist Child Care option more realistic by shifting the cost of service to the taxpayers instead of just reducing the cost. This option is incompatible with any mod that modifies bills or various other mailbox related actions. If you want even higher bills, download a flavor without this option and try one of cazelfax's bill mods.
Babysitter is Recurrent - Modifies the babysitter resource to make the babysitter come every day, similar to the maid. Since there are no time limitations on when the babysitter can be at home, if you hire a babysitter with this option, there will be a babysitter at your household 24/7 until you cancel the service. (You must cancel the service through the phone menu. Firing the individual babysitters will not keep another one from coming.)
This option removes the ability to hire a babysitter for a single day — you will have to cancel the service if you don't want them to come back. This option is incompatible with any other mod that modifies the babysitter. This option is compatible with Socialist child Care if proper flavor is installed.
Adult Only Babysitter - Modifies the npcspawn resource to make all babysitters start out as adults. This option is incompatible with any other mod that modifies NPC Spawn ages. Since this option was added after the original upload, it is a separate .package file and may be installed by itself or with any other flavor.
Choose ONE [UPDATE: +adultonlybabysit may be used by itself or used with other flavors]
.package file to install. If you have multiple versions of this mod it will not function properly.