Hancocks-Paducah offers a quantity discount on Kona solids - it would be $4.78/yard. I don't know if that's less than HL w/coupon.
http://www.hancocks-paducah.com/Item--i-KONA-1387
You might also ask your LQS for a deal if they special order it for you. Although the freight might be a deal breaker.