How to purchase the DLC without Steam

I'm not sure if anyone has done this yet... but I've been seeing a lot of "the DLC is steam only" kinda things on the forums lately.
Well... Here is a thread that can get non-steam players to buy the DLC.
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Step 1. Log into your account on the SK site
Step 2. Click "My Account" near the top
Step 3. See that image of the CE merchant? Click it!
Step 4. Select the payment type you will use. (Or click here -> https://billing.spiralknights.com/billing/shared/select_type.jspx)
Step 5. Select the DLC and purchase it!
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Once again, sorry if this has already been said.
I'm just trying to help. :c
Enjoy!

D'aw!
Well, I'll still leave that up for anyone that doesn't know how to anyways.
Thanks for letting me know. c:

Firstly, not DLC but Operation Crimson Hammer Expansion Mission. This is not DLC, you dont download anything with that purchase. If stupid steam calls something DLC its not reason to us calling it DLC also, like a bunch of brainless sheeps.
Secondly, what Glacies said, Expansion Mission tradeable only on Steam is the most arrogant thing made by OOO, its a slap in F2P players and their independency of where they should play. Its like give us $$$ or gtfo to Steam.

You forgot to mention Kongregate Client
...Does OOO even remember they have a Kongregate client?
No wait. Was it EVEN announced that there is a Kongregate client?
Starting to regret playing through Kongregate D:

@Owao
what's a kongregate and what does it have to do with SK

Kongregate is a game hosting site (part of GameStop network) where game developers can post their games. Kongregate provides chats for users (next to game window) achievments for doing certain stuff ingame (not in all) and also global currency (kreds) for using in all games which offer purchasable items.
Of course spiral knights is relased on kongregate with client that allows use of kreds to buy ingame stuff (revenue from kreds spent goes to developers and they can exchance it for real money) but thats only thing that kongregate client allows.
Kongregate players cant use:
- forum
- support portal
- wiki
- GM requests
- support tickets
- linking to steam (Fuu, who would want to do it anyways?)
- using voice chat
- participating in testserver
- using other perks of support portal like crystal energy history
- all other stuff related to those listed above
- linking their accounts to official site webclient
Kongregate is most abandoned client of SK. There is only one topic made by Eury? i think or other GM that is just 'welcome kongregate players'. There are no news posted there, there are no update infos or anything. Its like interactive advertisment board. A trap for new players, they go there, they make knight, play a while and then realise how much from game experience they miss.
Also on side note, kongregate users cant use forum and all related features. They dont know their username and password because they log in using special kongregate game auth token and kong user id (while many other games use same login method yet they allow players to play on official site).
After investigation i made while ago i have succesfully discovered that kong players use kongregate user ID as username.
While devs claimed its not possible to use kongregate account to loginto forums, i have managed it by mistake, when i registred for newsletter and it required me to confirm my mail adress. I cliecked confirmation link which directed me to forums, after that i was logged in with my kongregate account on SK official forum (username was kong ID) unfortunatly it was only for 24 hours since forum session seems to be purged daily.
Time to rush in here before you get flammed or something:
The non-steam F2P community cannot enjoy the DLC since there is no way to trade it. (Since it requires actual money and some people do not want to spend money on an Online Game/are too young to purchase said things.)
People are asking for a Client to Trade the DLC but OOO currently has said "TBA"
It's not that they don't know how to Buy it, it's just that they don't want to with Real-Cash.