What is the cheapest way to get a chopper mount in wow?

Answer 1

Generally the cheapest way is to have a friend or guild member who knows the pattern for it make it for you. To get it requires being Exalted with the Valiance Expedition, as well as some gold to buy the pattern.

The materials required which you can provide (buy/grind them) are: 12 titansteel bars, 40 Handfuls of Cobalt Bolts and 2 Arctic Furs. On most servers this will set you back between 1500 and 2000 gold.

The other materials are only available to Engineers who know this pattern, and must be bought at K-2 in the Stormpeaks. These are: Salvaged Iron Golem Parts, 8 Goblin Machined Pistons and an Elementium Plated Exhaust Pipe. These parts cost 12.500 gold, no discounts, they are always this price. And I repeat, only an Engineer can buy them.

So napkin math says that the cheapest you can get the mount for is 12.500 gold, assuming you grind the other mats yourself. This does not take into account that you actually spend your own time grinding them, so you pay for it in time instead of money.