Out of that $5000, PADI makes $560....blame the right folks for the price, the dive op...
true, here comes the rephrase: *ahem*
true, padi, the greedy tits, upped the requirements in terms of books, and even greedier dc-owners use that to justifiy another 200% on top

my advice still is:
go to thailand, get the proper education, the proper permits for work and then enjoy yourself silly *winkwink*
cheers,
alex