Hi apeee

Are you familiar with the views module? With this module you can do the things you're asking here. Both price and category should be available to you when defining a view. That way you can create dynamic listings in your store. If you're unfamiliar vith Views I would recommend that you read up on it here:

http://drupal.org/node/109604

Have a nice weekend

Best regards,
Thomas Kulvik

Ny Media AS
www.nymedia.no
+47 4000 7955