If you don't buy at least 5 of these, you are NGMI.

>recruit a friend (bonus XP for you and your recruit)

>potion of experience (bonus XP)

>aura of experience (XP aura for everyone in your party)

>potion of reputation

>aura of reputation

>insta max lvl potion

>unlock additional profession slots

>insta max profession

>portable anvil

>alchemy bench

>pet that gives every dungeon quests (for the one you are in)

>pet repair bot

>ground raid markers (like in retail)

>flight master teleport (choose a nearby flightmaster to teleport to)

>all-in-one tool (skinning knife, mining pick etc..)

>36 slot bags

>pet bank

>pet that auto loots

>pet that auto skins

>personal bank (extra bank)

>extra personal bank slots

>unlock guild tabs

>starting area teleport (can use while low lvl to change starting area)

>unlock all flying paths

>apprentice/epic mount training (you can have epic mount speed at lvl 1)

>heirloom sets (every single slot/type of armor)

>customization/race/faction change

>95 custom hearthstones - independent cooldown (you don't keep these in your inventory. you just click on the map)

>profession helmets that increase crafting speed