This seems to be a one off job, not the regular workload you would need to consider doing the job for that rate. reading between the lines it seems the op may not have the paperwork to complete the jobs themselves, and need someone with the appropriate tickets, and if this is the case they are taking the mick. I think lame might be onto something with his pricing structure, but I cant see it working for me, I havent the balls to give it a try