Seriously, you had just as well see if you can get it in a 13 oz wool and save up to make the difference in price (which may be $100-200 more than that $300,depending). You'll just have to bear the frustration of looking and waiting for something that's never going to show up otherwise. I've seen Rocky organize a special run of PV tartan but there had to be something like twenty guys making a cash money commitment to make it feasible. If you have nineteen relatives who want to toss in with you, maybe you can get it going.

Best

AA