So back to the original question.
There has always been discussions as to what the value of a house is - the value is what a buyer is willing to pay for it.
And this seems to be applying to PP software too because Adobe is selling a lot of PP software (CS, LR, and PSE) in spite of the occasional complaint of the cost.
As for what I would "like" to pay, I'd say nothing, but obviously I've paid more as I have LR4 and PSE6.
What it's worth to me is far more - maybe I'm unusual, but editing an image takes longer than capturing it, so the software is worth a lot to me. Someone suggested using Canon's DPP - I've tried several times, but won't put up with the non-intuitive interface. Lightroom has really got it right, and it has far more power than DPP.
I have quite a few thousand into gear, so a few hundred for such an important element is not bothering me.
There are also those that don't like the price of a good tripod, and buy junk several times before they get it right (in this instance, I'm talking about myself
). I seldom shoot without a tripod.
Glenn