I see it often too. Yesterday I had a guy that stated he didnt want a synthetic oil change, yet he requested one and signed the r/o with the price clearly on it.

He told us that I said it would be 35.95 with a 15 dollar discount equalling 19.95. I said 1 the math is wrong so no way I told you that and two I told him it was 65 bucks minure the 15 bucks for the discount