Your quote comes from Ernie Kovacks:
“Television: A medium. So called because it’s neither rare nor well done.”
More to the point:
To get a great finished three minutes might involve a whole day of shooting. Editing could be anything from an hour total to six hours or more. We know nothing of the people or subject matter you’re talking about, or the locations and shooting conditions or budget, so it is hard to estimate.
Figure your hourly and day rate first. Work thru the program in a summary form, look out for expenses like jib shots, green screen, language dubbing, etc. …anything that is going to add more cost. Next, figure how long each shoot and each edit might take. Bump it ten percent more as a hedge. Now add gas, food, and staff. Multiply times your rate and add a markup for profit. Now you are somewhere in the ballpark, assuming nothing goes badly wrong.