Surprising that they want this picture, as it hardly shows the airline identity...
Maybe they want this angle for a specific reason, which would increase the photo's value as they can't just pick another. I find it hard to imagine such a reason, though. You could try to ask, but on the other hand, they may not have a lot of patience, and pick another.
When I don't feel a photo is special, my rockbottom price is 30-40 euros for commercial use (which means that ultimately they're trying to make money out of it in some way or another). But it's entirely up to you.
In this case I think I'd ask for - hell - a jumpseat flight! This is on the assumption they fley some short sectors within Europe. The chances of getting this are probably very slim, as they don't like to organize it, but I would give it a try.