This is potentially a straightforward job however it also has the potential to be problematic. Many downpipes accrue debris because of dirt due to a blockage. This might be able to be flushed out with the jet wash if it is just compacted leaves/moss etc. However, where problem with this job is if the debris is jammed inside the neck. I won’t know for sure until I’ve cleared the dirt and flushed and then had a look with the camera.
However, I’ve priced this up in case I need to get the ladders up there and will need to get someone else on site also. If we can unblock this with the kit then I’ve quoted £200.