Personally I would rather buy the material myself that way I know what I am getting and if I don’t get enough then it is my fault and I will deal with the consequences. If you get the material and you don’t get enough then we have a problem. I am going to charge you a trip charge to go and get more material. Or I might not be able to come back and finish for a week or so, because I have other jobs lined up. If you buy the material then you will be responsible for the warranty… so what I am saying is if you buy the materials to save money and don’t get enough then what have you saved?