Crowd Pricing - An Interesting Idea for reaching a competitive price is available on "haystakt.com". what do you think ?

In the fundamental economic equation: the more people want to buy, the higher price should be(because the supply side is limited). Groupon model is falling because it turned out to be a promotional and marketing tool, not a distribution channel. And more oftenly mistakened, for most of the products, people buy features and quality, not price. Price competitiveness has become less and less relevant recently due to product differentiation. For homogeneous products (commodities), the auctioning model has proven to be the most efficient and still working fine. So I think you are trying to reinvent the wheel.