Hey Calico,

If you're asking about wool / poly in a USA Kilt, then there's no price difference for the blackwatch (although we're out of Poly Blackwatch). The wool that we have (for Blackwatch) is a lighter wool that we got here in Philly MUCH CHEAPER than $40 / yard. We found that it wears well during summer months and onstage. Many of our customers want a lighter kilt to wear all the time, so we got the lighter weight materials.

If you have any other questions, fire away!