Projects take time, because you want to give the story its due.
As you have heard, when you call a production company for a quote, it depends on the size of project. That is true and here is why.
A video can be shot in a day, edited and output in a few minutes, hours, days or weeks. The quality, depth of story impact is dictated by the style and quality of a video.
If you want a quick output, the video pretty much has to be shot as is with and uploaded to your format immediately, with little editing.
A mid range 3 minute movie with editing and titles and a little movie magic and story telling should take at least 2 to 3 weeks to develop the script and idea’s, 1 to 5 days to shoot. At least 2 days organizing content, a couple of days for the right music, and at least 40 hours of editing, and back and forth reviews between client and editor. A good 3 to 5 minute can take a good month.
So it really does depend on what you are looking for.