Do you have any Amish farms in your area? If you do, I'd check with them. Many around us have small dairy operations and pull the calves from the mothers immediately. There are a lot of Holstein calves around us, both steers and heifers. Might be worth a road trip to a nearby community to check things out. I imagine that for a bottle heifer, even though it be a bottle baby, will bring a good price to the owner. Still if you are willing to dicker with them you might be able to find one at a reasonable price.
Either way, I would suggest taking a nice Saturday afternoon, jump in the car and scout out some of the local farms around you. If you see something you like stop and talk to the farmer. If he can't help you, he might know somebody who can.