We're paying around 450/500 for 2 storey x 9m for 4kwp, another £100 or so for edge protection and that's about £200 cheaper than anyone else in our area. One of our customers is a H&S consultant and she reckons the householder is liable if they fall off the roof because there's inadequate protection. We scaffold all our jobs even bungalows, I won't take any risks but some customers just aren't that bothered.