FYI cheap and good quality seldom go hand in hand.
Besides there's many good tutorials regarding making waraji floating around the internet and I've got the impression that most people make their own.
Masamune Date - Sengoku Basara
*~Next con I'm attending~*
FIN Chibicon (9 November 2013)
SAT Ryūnosuke Ibuki - Hakuōki: Shinsengumi Kitan