Think about what this also means:
1) Gold Farmers now all have a zero balance.
2) Less of a requirement for more "gold sinks" to pull money out of the economy, flight costs, BMAH costs, etc.
3) Less of a barrier to people just starting the game.
Either way, it's a thought experiment and while I'm sure things have changed on the server I last played on weapon enchants ran anywhere from 5k to 10k, gems could run about 1k each depending on the type of course and most other enchants if I remember right were averaging around 200g.
Now I haven't played since just before ToT, but somehow I doubt things on Hyjal are any less inflated.