Don't overlook the GBP 100 shipping cost. And what's posted there is just the opening price. At the buy it now price it's more like $36 per meter. Plus shipping, and customs at 25% for wool fabric.

OTOH, it's likely the 18 oz regimental weight tartan. I have a roll of the Gordon by Robert Noble, and it's bullet proof. Retails for $90-$100/yard.