The steps are actually quite simple when you think of it. You want something delivered from point A to point B, but the cost is too high. So we solve it by using point C. How does that work? Simple!
Get a local address at the origin country. Say you are trying to ship a parcel from the USA to the UK. Then get an address service in the USA. There are many such service that offer this. You then have it shipped locally which is usually free. You then use the parcel delivery service to pick it up from the USA and have it delivered to your local address in the UK. It's that simple. And if you do this regularly, your savings can be in the thousands.
The steps for choosing and local address service will be specified elsewhere. We are concerned with finding the right parcel delivery service. This can be done simply and cheaply: just compare the quotes of different vendors!