I did let a few customers supply their own materials. It was usually a disaster. "I know you said deep boxes but these were cheaper and look deep enough", "we talked about strip lights but I found these lights on sale. No, I didn't think about light boxes for them", "the store didn't have 12-2 UF cable but the clerk said this 12-2 Romex would be OK to bury.", and on and on. My love of the trade hasn't totally died but it has suffered a lot.
