Recently we configured products from CRM to e-commerce setting of The Portal Connector and found that the price for the product was missing.
The way to fix this issue is to Open the product form in CRM and add the list price field on the product form and specify the value there.
Once value is specified, go to administration – portal connector configuration and click on Resynchronize to update the product record in the portal.
Once synchronization is done, we can see the values updated in the portal.
Hope it helps..
Nishant Rana's Weblog 
Hi,
I just thought that it may be worth noting, that this is only when you are not using price lists.
If you use price lists in CRM to keep track of pricing, then the values you are talking about (i.e. on the Ecommerce Products page in sitefinity backend) will correctly be showing $0.00. This is because the price list values will be used when rendering the product list widget (which are recorded in the background in the sitefinity\portalconnector database).
Hope this makes sense.
Matthew.
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