I have been on the lookout at various surplus stores for a good and complete pair of these boots. These boots consist of the white outer shell, into which goes a mesh insole followed by a thick felt/wool insole. Then, the wool 'duffle sock' or liner as this companies ad calls it. I've seen the outers and the wool sock sold as a complete set but it isn't. The insoles are what keeps you from the cold ground. I've also seen just the outer shell sold or just the wool duffle sock. You have to be careful.
I have only found one store that sold the complete set and even then, size 10 was the largest size and the insoles were missmatched in size. I'm looking for a size 11. Also, these boots don't have much support in the bottom if support is an issue with your feet. I am wondering how my feet would do in these boots as I use orthotics.
As for the company you are looking at, I've dealt with them once before. Never again.