Hello Daniel, Welcome to the forum.
Have a look at the stickied topics in
Payment & Shpping there is lots more useful info in the various topics.
Your supplier should be able to organise the delivery proccess for you if it's a courier.
If it's a larger order a normal courier may not be an option, and you will have to get the goods collected from the port or organise a Freight Agent to take care of it for you.
The price will depend on what terms you agree with the seller.
This topic gives a better understanding of this.
Make sure you understand the process before diving in, as it will save you from making costly errors.
As said, make a brew, get a packet of Custard Creams and trawl previous post.
Best of luck.