Bank/Inventory space should also be considered if you heavily farm for Nulgath, the Blinding Light of Destiny or just happen to have a lot of items.
----------
Weapons
Some weapons have special effects from fancy animation to pumping your combat damage.
Chaorrupter Locked (300 ACs) - Doubles damage against Chaos. Very useful for farming in areas with a lot of chaos monster. Or if you just want to see epic damage.
Grimblight of Destiny (2000 ACs) - Has a couple of neat effects. If you like to make afk players /feign, go get this. (Effect is shown in your screen only.)
Classes
Do not buy AC shortcut classes that can be earned as a free player. Save that 2k ACs for something else. Below are classes that can be earned by legends or bought with ACs for free players.
Alpha Omega (1000 ACs) - Cheaper than most AC classes, Alpha Omega is a very powerful class that needs full Lucky enhancements to max it out. Capable of killer melee damage, the class can also stun and heal. Epic for PvP.
Archfiend (2000 ACs) - If you want to be a powerful offensive support caster.
Blood Titan (2000 ACs) - If you're into tanking and using life as mana.
Armors
Prefer looks over functionality? There are a lot of neat AC armors available. But, we'll recommend practical items here.
Invisible Ninja (500 AC) - Need an invisible armor? Try this one. Useful if you want to take screenies of your equipment without your character in the way.
Undead Warrior (1200 ACs) - Uncle Dage wants you! If you're up for some intense farming and obtaining awesome evil items, then joining the Undead Legion might be your thing. To join the legion, you need to buy Undead Warrior. You might also wanna save some extra ACs just in case rare Legion-only items appear.
Misc Items
There are some AC misc items with interesting functions.
Treasure Chest Key (200 ACs) - While it doesn't offer you free boosts like Fortune Tickets, you can get items of great quality here including the altar house items. See Open Treasure Chest for complete list of items. (Note: You can get keys from spinning the wheel.)
Dragon Runestone (15 ACs) - If you want to acquire alchemy reagents fast without farming. Can also be used in the alchemy mini-game.
Arcane Quill (15 ACs) - Can be used to quickly acquire ink for Spellcraft if you don't like farming. Some inks (ergo, some scrolls) can only be obtained by using Arcane Quills.
Treasure Map (2000 ACs) - Unlocks a lot of AC items worth beyond 2000 ACs. You can buy all the items from the treasure chest then sell the map for 1.8k ACs (within 24 hours). (Note: You can't open the shop anymore without the map barring you from future chest updates.)
Future Rare Items
Don't spend your ACs out of boredom! It'll be worth the wait for these rare items that appear yearly.
Non-legend pets (200 to 300 ACs) - Sometimes, a free player pet may be available costing a small amount of ACs. Like this Chinchilly for example.
Quibble (A lot of ACs)- This npc occasionally appears in Battleon and offers a lot of neat AC items.
Naval Commander (Around 1100 ACs) - If you like longcoats, pirates or both, save for this.
Rider Armors (1000 ACs) - If you want your own mount to ride into battle with, consider this.
