Commerce Module - Quantity

We have an issue that needs to be addressed on the Commerce module. When you building a store not always will the quantity be a whole number. Say for example health food store I would buy a 1/2 pound of sea salt. I wouldn't charge them a full pound because the commerce module doesn't allow a decimal value on quantity. Kind of like charging a hourly rate for a service you would need to be able to add a decimal point to quantity. 

So is there a work around for this? Is there a way this can be added to the future release maybe?