Found a couple that don't look too bad price-wise, but they're 12V. I would have to add a converter to the budget to power these from the wall. These are by far the cheapest I've found so far. Maybe a tour through the scrap yard is in order.
No name replacement:
PartsTrain.com - Hard to Find Auto Parts and Truck Parts -
Bosch:
PartsTrain.com - Hard to Find Auto Parts and Truck Parts -