For upgrading leopard to snow leopard it'll cost you about 30 bucks. For getting bluetooth drivers, copy paste, search, P to P and the almighty landscape mode keyboard 10 bucks. Seriously now, I find this quite crazy.
- Snow Leopard is unusually cheap. - I think I heard somewhere around here about some statistics law that stated that for a update on a product that has no other service charges, you have to charge something or else you lose money.
That "accounting law" is a lie. And even though it doesn't have a service charge, the amount of cash flowing through iTunes is a pretty good substitute. The upgrade charge is just extra dough. Can't blame Apple, though, they ARE a business and it's a decent upgrade.