Marketpress - Option of no shipping per item

My client has a site that requires a 'no shipping' option on a couple of products. That is, shipping charged globally, but if they only purchase a 'no shipping item' they are not charged. We are currently running the table rate shipping on the site, so have the variations set up but there are a couple of items that are an exception to the table rate rules so we would like to be able to specify a 'no shipping' in lieu of the 'extra shipping' on the product. We have improvised by showing a negative shipping fee in these products in the meantime to negate the shipping but if the customer purchases more than one of these products we run into a problem! Is this a plan for a future update? Or can this be easily custom coded? Thanks. :slight_smile: