Well, I have bike stores galore where I live, including 2 Trek concept stores.
I called at least a dozen with no luck finding this model in stock.
Unfortunately one store owner shared the Simple City 8 bike (which featured this basket) was a flop and has been discontinued in 2011.
He thought the basket run was quite low and would be difficult to find.
He also said he chose not to carry this basket as the weight is excessive (10#), too heavy for a bike.
I sent an email to try and locate a basket, but if this is a model you want to buy more of, I suggest you consider sooner than later.