I use two flat rate shipping methods: standard and express. I want to only offer express shipping to some products which are fragile, if I do this by setting them as "always free shipping", I have to add the shipping cost to the price, however, if a customer oder more than one item, the shipping becomes per item actually instead of flat rate. I wonder if there is a way to set some products only available by express shipping or any other possible solution. Thanks a lot in advance!!