Switching prices for google base

[supermarketonline]

We would like to be able to submit lower prices to google than we do to other sources.  How i see it working is that at the end of each url we submit to google base there is a tracking code (source=googlebase).

When a user visits the site via one of these urls we would knock 10% of the price of that item and store the item in a cookie to ensure that the price of that item, for that user would stay at the low price for 24 hours.

My question is whether google would have a problem with us doing this?  The second part of my question is whether they check the full url including the query strings?  If theyt just checked the canocial URL they would see a price thats 10% higher than the one we submitted to base - which, of course - would be bad

[StephanieChang]

Hi Martin,

I have less of an SEO concern over this than a user experience one. It doesn't sound like a good idea to have different prices for users who come from Google product search. What happens if they return over 24 hours later to purchase the product? Unless there is some type of clear message on the page to indicate that the price is only valid for 24 hours, it will cause a lot of confusion, and even then, it's not the right approach from a business perspective.  I've talked a few individuals who had prior experience with mismatched prices in Google and overall, customers are never happy when that happens.

Also, it's okay for a few products to have different prices. However, for the most part, when prices are not matched between product pages and feed data, you're risking Google suspending your feed.

Although, I can understand the reasoning behind this, in general, I think it is far too risky to implement.

Best,

Stephanie