"How do they manage to send it post free from Luxembourg?"
Don't think they're part of Amazon (hope not!!)
Whenever they're ou of stock they link you to Abe
A couple of years ago we bought The Famine Atlas - a doorstep of a book which came at a considerable discount and post-free - helps when you're living on the Atlantic coast
Good, comprehensive stock and good discounts and boasts that it posts free all over the world - never let me down yet.
I have in the back of my mind that they are based in Yorkshire (still - we've all got to live somewhere, haven't we!!)
Jim Carroll