Firstly, I have a strong feeling that the results you get in the main SERPs are strongly driven by price. Which is fine as a strategy – however considering Google don’t currently take shipping price into the equation – it can be a little frustrating. My main client for example is often cheaper on “total price” than their competitors, but frequently doesn’t feature in the blended search results because the competitors have a cheaper pre-P&P cost, but high P&P charges).

I doubt that microformatting vs not makes much difference yet.

My main theory about the differences you see in the main blended universal search results and the Product Search results would be personalisation. Put simply – I think that the pure product search does not benefit from personalisation based on user previous searches, wiki etc. which the main SERPs do.

This would further the case for Google dumping Google Product Search over time since it can’t deliver results that are as targeted. And at that point I’d expect that your items would only show up as “products” if their microformatted. My guess would be we’re about 18mths away from that though …

Of course – none of us really know 🙂

Why is that?

It is not the case with more pin pointed keywords, just the broad ones. Change that keyword search to coleman sleeping bags and the three top results match on both pages.

Thoughts?