I needed to use one for a quilt...triangles that would have distorted. I asked my local quilt shop and she happen to have one....I borrowed it and it was a great tool. I don't know if I would use it daily, so I never inquired her to see if she could purchase it for me....I'd probably find it on Amazon and save some $. I know that it was about $35-40 and for one quilt...I didn't want to purchase.