For the people saying "no way it's real" or "too good to be true", here's the inside scoop:
It is a typo, and we are taking advantage of it because occasionally the system doesn't catch its own mistakes, and occasionally the vendor decides to honor a crazy deal just to avoid the added costs of paperwork and customer service.
So NO, the vendor did not intentionally offer the bass for this price, but YES, there is a reason we are buying it anyway.
For example, a year or so ago there was a slip-up at one vendor where their online system allowed people to "stack" coupons. I got a nice expensive item for literally half price, and other people got even bolder and stacked so many coupons they got up to 75% off.
It was just a computer glitch, and you bet your butt it was "for real".