There are several places that you can buy a Greataxe. First place most people go is to the Auction House but in some of the lower levels its might be hard to find a selection. You can buy them from NPC, depending on the one you choose that could either be very cheap or very expensive.
Now if you are just starting out it would very much be to your advantage to become familiar with would be Records of Eminence. You can get a simple Greataxe for 91 Sparks....which might make no sense at all, so that is why I attached below a link for the Greataxe so you can see all the places you can buy one. There are hyperlinks on the page to help you out.
I also attached links for what you can buy with Sparks of Eminence. Then last one is Records of Eminence or ROE. It may seem a bit confusing at first but it seriously is a system that will help you level faster and help with gear....it also will help with leveling your stats, both weapon and magic. Good luck! Skyfiredancer (talk) 21:34, November 22, 2015 (UTC)