We clearly understand what is happening for you. This is due to the cache mechanisms in WebStore and we still have a lot of work to do to write down the documentation so that it is easy to implement WebtSTore and the Orchard module.
Go to the adminictrayion panel, click on the product menu and then on the Data update data button. This will update the catalog data (it may take one or two minutes). This might be enough and you should be able to see the products, prices, etc.
There is a second cache mechanism in Magelia WebStore whit is present in the Administration / Platform / Appliction Tiers. Select the appictaion tier and click on edit. Then you will see the clear cache button/ Click on Clear and you are done.
Let us know if it works. It should !
By the way, we will release tomorrow (July 16. 2012) a new release of Magelia WebStore 2.0 which fixes a few bugs, implements a more efficient Data Update mechanism, better organized menus and an improved setup procedure. We suggest that you wait for