Dave,
I protect for the retailer in their warehouse which is 5 mins from me, carpet laid out ready to go, hence as I said easy money. I generally work within 15 miles of my home & deal with retailers selling carpet at 'normal' cost ,£ 20 -£ 50 mtr , which I appreciate you are in a totally different arena & admire you for it. I honestly do think my prices need to be raised as I am not a newcomer to this business so know the ropes (18yrs) but realise the retailer must make a good profit and the customer will only pay so much at the end of the day.
I am not tied into any call outs to thje end user for the protection I carry out for the retailers, or rather I dont service them for free.
Again its down to you to decide on your circumstances and what it costs to deliver the service and what profit you receive at the end of the day.,
Wish I had more profit so maybe that says it all!
Mike