Bing announced you can now search Bing Shopping like a human by just typing out, conversational style, what you are looking for.
The examples give include [hudsons jeans under $200] or [air jordans under $100].
Here is a screen shot:
Bing said:
Under the hood, we try to detect a price constraint in your query, and intelligently adjust the results to match your criteria. Right now, this only works for prices, and only for US users. This is just a small step in our journey to make search friendlier to natural language queries, and help you quickly find what you’re looking for.
Forum discussion at WebmasterWorld.