If you are bying from buy.com, and want it shipped directly there, you need to work with them. Each site has different prices for shipping. This forum is not affiliated with any vendors, unless the poster happens to work at one and knows the details, we won't know the costs to ship any more than you would until you check the shipping through the site.
You should be able to work that out on the buy.com website. You might need to ask them through the Email Help option.
And you should check the European websites (example: http://uk.buy.com/ ) too. You might get lower shipping and more favorable currency exchange rate too.
If the laptop weight is 5.48 lbs you can expect the shipping weight to be near 15 lbs is what I would guess.