Breaking the Sound Barrier

The way goblin discount works is that it treats every vendor like you're exalted with it. So no matter at which trainer you're buying this it'll cost you 4k gold.

Edit: lol at downrate. It's valid information but if you gonna downrate at least post where exactly am I wrong.

Edit - With latest hitfix (on 1/6) this is no longer true. Notes:

The goblin racial Best Deals Anywhere should now only be applying to vendors with associated reputations. It no longer incorrectly applies to vendors with no attached reputations, nor does it apply to flight path costs. (Note: the displayed costs for flight paths require a client-side patch to update and are not currently reflecting this racial change). In addition, it is no longer possible for goblin characters exalted with their guild to receive an extra discount on top of the exalted faction discount from guild vendors.

"Approaching the sound barrier!"
- Flying Machine (Warcraft 3)

4.03 patch notes say "What a Long Strange Trip its Been" achievement now awards master riding.