But the OP seemed to me to be a case of someone paying for cheap crap and being surprised when it didn't turn out to be champagne.
Gosh, you still seem to be finding this very difficult. I've tried explaining it, but clearly I'm going to have to go again, v-e-r-r-r-y s-l-o-o-o-wly.
Two complete separate issues seem to be getting mixed up. One is your favourite: that it's no good paying for cheap crap and expecting champagne. You like this one. Because it distinguishes people like you, who fly BA, from all us riff raff in cattle class. What do we expect?
Well, I'll tell you what I expect. I expect to be treated like cattle. And I am. And that's fine, because that's what I've paid for. But lost property has *nothing* to do with my post, or my beef with the chisellers. The chisellers have nothing to do with Ryanair, or any other budget airline. So, fly first class to Dubai, be my guest. But please stop imagining it has anything to do with this issue. Because it hasn't.
The second is, roughly, 'you have no idea of the costs involved'. Well, that's true, obviously. But surely the implied point is: 'If you did know the true costs, you would see that the charges are entirely reasonable.' Thereby conceding - I suggest - my core point: that I should be charged enough to cover costs. But no more.
Now, neither you nor I know what the true costs are. But I am clearly getting charged more than them. How do I know this? Because as far as I know, commercial companies don't operate as non-profit organisations. Mr & Mrs Slimeball aren't doing this out of the goodness of their hearts. They're doing it to pay for their beemers and shag pile carpets. And though I don't know this for a fact, I'm pretty damn sure that Stansted will be making money out of this too.
This is how I see it. Once upon a time, when airports were part of the public infrastructure, airports would operate lost luggage facilities. They would see it as part of their civic responsibility to recognise that sometimes tired and stressed people will mislay things, and that it's only decent to do their best to reunite such people with their property. It cost money to provide this facility, but other than putting the stuff in landfill, what else could you do? It was a cost of doing business. Like providing toilets.
Then one day, after privatisation, some brightspark beancounter said 'hey boss, I know how we can eliminate the cost of providing this service. In fact, not only can we eliminate the cost, we can actually make money out of it.' And his boss said 'I'm all ears'. And that's how we got where we are today. The airport sells a concession to a third party to provide a service it ought to be providing itself, making money out of it; then Mr & Mrs Sleazeball make their profit on top.
And that's how I end up having to pay £35. And no, I don't think this is even close to being 'the cost' of returning my property to me. What it effectively means is that the airport has decided to shirk its responsibility to 'do the decent thing', in favour of making money by exploiting its passengers' (who, let's not forget, ultimately pay its salaries) misfortune, letting a third party do the dirty work, while sharing in the proceeds.
So, is returning lost property 'a cost of doing business', on a par with providing toilets - something companies should be willing to provide, at cost, to the people who use their facilities (and pay their salaries)? Or is it perfectly acceptable for them to play 'finders keeper', and return your own property to you only on payment of a non-negotiable, profit-making fee, set by them?
I know what I think. And one thing I *know* is that it has nothing to do with what airline I fly, or at what cost.