Your math doesn't include the hourly wages of the people who do the searches multiple by the time spent on them. Granted, I don't have that info, but I'm guessing it's not peanuts.
It could be truly peanuts from something that happens automatically during entering things into the system anyways to something like multiple times the raw cost if it's something like 10+ minutes of manual work per average search.
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Your math doesn't include the hourly wages of the people who do the searches multiple by the time spent on them. Granted, I don't have that info, but I'm guessing it's not peanuts.
It could be truly peanuts from something that happens automatically during entering things into the system anyways to something like multiple times the raw cost if it's something like 10+ minutes of manual work per average search.