I have only purchased this brand for DD who will be 6 soon. I know it's girl stuff, but I buy it for the quality and durability. Many of her coats I've purchased used on the popular auction website that begins with the 5th letter of the alphabet. I just love the style that if I can get her a few she can change out. Even used they are in such good shape b/c they are excellent quality.
I looked at the links and while I've never ordered from that website, it's great to see the coats at a discount.
I know that some JCPenney stores carry a more everyday line of the Rothschild coats. You may want to try their website and compare prices/product.
We have been extremely happy with the quality of Rothschild coats and they are very well made that you can easily resell them or feel comfortable passing them on to another family later.
As for sizing, they are pretty true to size. If anything they will run a bit large. That is my experience with the girls' coats.
Best Wishes!