Maybe the money spent on verification software/hardware, and time spent to render doesn't seem as expensive after all?
.... Running $400 blanks and 16hr programs, scrapping on toolpath #16 isn't an option, especially with an end user breathing down your neck. Especially when you'll run through $60 worth of inserts just to get that far..
But rest easy... you're not the only one who's enjoyed this lesson in attention to details.