My answer on this one is...it depends.
I try to be supper easy to work with and bend over backwards for customer service. A lot of times I can order the additional blanks with another order, so that way it doesn't cost me anything extra. If its a good repeat customer, and they are usually good about not changing orders, I do everything I can in order to make them happy, including eating a little bit of the shipping for the add-ons, if it's a big enough order.
If its a small order, or a customer that does this consisitantly, I explain that it cost $XXX for shipping for me to get the shirts in and charge them that amount.
I try to be supper easy to work with and bend over backwards for customer service. A lot of times I can order the additional blanks with another order, so that way it doesn't cost me anything extra. If its a good repeat customer, and they are usually good about not changing orders, I do everything I can in order to make them happy, including eating a little bit of the shipping for the add-ons, if it's a big enough order.
If its a small order, or a customer that does this consisitantly, I explain that it cost $XXX for shipping for me to get the shirts in and charge them that amount.