Videomaker – Learn video production and editing, camera reviews › Forums › General › Video and Film Discussion › Freelance news videographer? › There are far too many
There are far too many variables in your question to answer it.
Perhaps an approach for you would be to ask what the news agency is prepared to pay for a 3 minute edited video, then decide whether you’re willing to work for that amount.
Consider how much time will be involved, including travel time and costs, and calculate what that amounts to for each hour of work. Based on this you should be able to decide whether or not it’s worth the pay.