MP’s Expenses

What I find amazing about the MP’s expenses, in addition to my astonishment in their behaviour probably due to my naivety, is that if you look at some of their expenses, that is their nature and cost I suspect if they had another employment, or should I say they were in an employment, would they purchase those items, or if they did would they spend that amount on them?
I suspect not. The mantra, obviously provided by a so - called adviser is that “it is within the rules” (Which they drew up!) Seem to remember from my history books “I was only obeying orders” being a mantra being trotted out. Mind you “trotted” reminds me of Trotter of “Only Fools and Horses” fame.
Del Boy would be proud of them!