A New Fresh Idea on Buying Car Parts

I have an idea similar to what I use on another site to buy things for my household. I use www.slickdeals.net to buy a lot of things for my family, and I think their method of buying could be used to buy car parts.

Comparison shopping is the new wave of buying these days. Lets say I found a set of reproduction sun visors for my 1964 Dodge Dart GT, which I did, for $89.99, then another car parts shopper responds and indicates another place selling them for $80.00, and so on. This is team shopping to help each other find the best deal on the new, reproduction or used parts. Also, we could share online checkout coupon codes to help with our purchases.

This is just an Idea, I am wondering if the more experienced members have any input, and or category in the forum where this should be posted?