On account:
WoW: Warlords of Draenor
Diablo III: Reaper of Souls
Starcraft II: Collector's Edition
Probably the most money-invested WoW account you ever seen, featuring rarest and the most expensive vanity items of all the mainstream games (e.g. $4.5k+ BlizzCon 2005 Murky, which is only growing in price by another $1k+ every year, more info below). Redeemable TCG and BlizzCon codes stuff on the acc is worth ~$9000 total atm.
100 shaman
100 drood
several 90 characters
>Masked armory of a random char<
WoW account has been ranked Top 2 by AP in Pandaria in my whole region, with 99% completed and lacking only 3 achievements (some trashy ones like 100k valor points), 21600+ AP atm.
So now the only missing achievements are Draenor ones.
All the hard-to-get stuff like "What a Long, Strange Trip It's Been" (all World Events) or "Insane in the Membrane" done
All possible PvP achievements done
Season 10 Gladiator — Ruthless Gladiator's Twilight Drake
Season 11 Hero of the Alliance: Cataclysmic
Arena Master
Bloodthirsty (250.000 honorable kills(actually, many more))
61 Feat of Strength
220 mounts
343 pets
All BlizzCon codes
All Collector's Edition vanity items from:
Classic WoW (Zergling, Panda, Mini-Diablo)
The Burning Crusade
Wrath of the Lich King
Cataclysm
Mists of Pandaria
StarCraft II: Wings of Liberty
Diablo III
All "Recruit a friend" mounts, including unobtainable spectral ones
Now to serious stuff with approximate ebay prices:
TCG mounts:
Lootcard Price Amani Dragonhawk $100+ White Riding Camel $100+ Swift Shorestrider $140+ Magic Rooster Egg $250+ Reins of the Swift Spectral Tiger $650+
BlizzCon codes:
Event Lootcard Contains ~Price Arena Tournament Murkimus' Tiny Spear Murkimus the Gladiator $0+- BlizzCon 2011 Murky's Little Soulstone Murkablo $100+ BlizzCon 2010 Smoldering Murloc Egg Deathy $120+ BlizzCon 2009 Heavy Murloc Egg Grunty $300+ BlizzCon 2007 Murloc Costume Murloc Costume $450+ BlizzCon 2008 Big Blizzard Bear Big Blizzard Bear $700+ BlizzCon 2008 Tyrael's Hilt Mini Tyrael $1100+ BlizzCon 2005 Blue Murloc Egg Murky $4500+
Murky info from Wowhead: "only about 8,000 of these pets exist in the world, and very few of the codes have yet to be redeemed. They were goven to attendees of Blizzcon 2005, which did not have the possibility to attend online. Only those who physically went to Blizzcon were given the code. With the sheer rareness of this guy, and the numbers on unredeemed codes growing smaller and smaller, prices have skyrocketed. A couple years ago, a code for this pet cost about $2,000. Currently, in 2015, they cost about $4,500. This is one of the rarest companion pets in the game, possibly second only to a couple the other special (non-Blizzcon) event murlock pets. If I ever win the lottery, I know what the first thing I will buy is".
"It is the rarest of all battlepets in US Servers, followed by Mini Tyrael and so on..."
All in all, if you want to be ",the Insane", riding a Gladiator drake, Blizzard bear, or Spectral tiger in a Murloc Costume with a $4500 pet or second rarest Mini Tyrael by your side, that's an account of your choice.
And it steadily grows in price as time passes by.