Originally Posted by
Mos6502
I would say the obvious and best choice would be to find an old Raleigh. Considering the ladies step through ones are very common, it shouldn't be hard to find one in good shape for south of $100.
Not low enough. The OP wants a step-through. The Raleigh is a womens drop-tube frame. Step-through has only a downtube (or a downtube and a small strut tube) and is as close to the same height as the BB as possible.
For instance:
