I am very precise in my cutting because I don't waste fabric when it costs $21-$26(on average) per metre.So yes, I get very stroppy when someone undercuts as I often can't make the block. I was undercut on every piece in another town recently. The man had never seen me before, so I suppose he thought he could get away with it, which was silly if I were to be a new customer. When I went back to complain he was at first resistant. Then the shop assistant spoke to me and told me how she remembered me from school. I was in a few grades ahead of her and she was in my sister's and cousins' class...the tone changed then and new cuts were made.
I am grateful to the assistant, who is obviously a diplomat, and this is just a long winded way of saying that I agree we should get what we pay for and not have to check every time.