Make it a $1k. I don't care. I like not having to be groped, not having to reveal to strangers my shoulder problems, and finally being treated at a checkpoint with dignity again.
I like that the cost does keep the lines low. Just like airport parking. Make it $50/day, I'll gladly pay to know I have a spot open for me, and easy access to the terminal without having to go to the edge of eternity.
In Dubai I use Marhaba services which charged me about $12 to be escorted through customs. We went past the large lines of economy passengers, beyond the business and first class passengers, even beyond the diplomat line to an unlabeled line where customs was quick and friendly. Sometimes it just pays to pay.