Shopify – flate rate shipping

In October , we have been approached to edit Exo Shopify store and to work out the logistic for the online shop. After few tests, we find out that the best way to to calculate the shipping will be per cube meter rather than weight. However our aim is to use a flat rate rather than a table price, as it is more easy for the customers to understand the shipping cost involved in purchasing bonzai driftwood for sale. On the top of it, the cube meter solution is more difficult to use on Shopify than other platform.