I've done the same thing (well,almost) I had a home builder that wanted to furnish all of the materials so I just did the job per manhour. Frustrating waiting on him to return from the big box store for the third or forth time to get the right material, but hey, I was being paid by the hour.
If I were to do a job with a quoted price on labor and the owner/builder furnishing materials, I would not start it until
ALL of the materials required for the job were on the jobsite and would charge him for my time to doublecheck his purchases.
[This message has been edited by txsparky (edited 05-23-2003).]