You just have to ask the seller
You should be willing to pay first, including for all packaging and shipping costs.
The problem you will have is that most sellers do not want to deal with issues regarding lost or damaged shipments. Customs and import forms can also be a hassle, depending on what is being shipped, what it's worth and what country it's going to.
You also are likely to face significant insurance costs, depending of the value of the item(s) being shipped. Again, you would have to agree to pay those or risk receiving a damaged item for which no compensation is available.
In the end, you just have to ask.