All pricing is bases on each individual request. So, pricing can vary. But through the years, you develop a system to try and give ballpark figures.
Things that can affect the price:
Design: If a signed-off design changes after work has started, The Secret Agents cannot be responsible for additional cost incurred.
Deadline: If the project has an unchangeable deadline, the client could be responsible for any additional costs as a result of changes in design, materials, or if other trades cause The Secret Agents to not have the agreed amount time allotted to complete the project.
Accessibility: If it is an on-site project, this could add to the over all cost i.e. lifts, scaffold-
ing, or equipment rental.