Habbo is a stingy virtual world. Pretty much everything costs coins (also called credits), and coins aren't cheap!
Follow this link to see all the ways Habbo will take your money. It's pretty impressive, actually. Coin Purchase Page: http://www.habbo.com//credits?
Collectibles - Habbo releases (weekly, I think) an item that will only be available that week. The current item is a gondola (Italian canal boat) for 25 coins. They claim the original collectible, released back in 2005, was sold for 4950coins (About $800), though I'm not sure how they came to that number. In any case, collectibles seem to be a 'stock market' sort of thing in Habbo (plus they're pretty neat!)
Trophies - Trophies are an interesting item in that you can write something permanent on them when they are purchased. The idea is you reward yourself or other players with them.
Pets - At 20c pets are a little pricey, and they come in three flavors: cats, dogs, lizards
Games - You need tickets to play all but the lamest of the Habbo multiplayer games. Tickets are 2 for 1 coin, or 20 for 6 coins. When entering the game room, there was an ad for The Dark Knight (I've seen it, lay off!) I don't know what you get if you win the games, but I expect there's prizes.
Habbo Club - It's hard to tell, but it looks like it's 20 coins per month. You get:
- Access to special items - there's a Habbo Club tab in the store.
- Free furniture item each month
- Special room layouts (non club members get boxes only)
- Jump to the front of queue lines when waiting for rooms to load.
They have a 'coin subscription' listed on their payment page, but they are no longer offering it. I'm curious as to why they stopped. Another interesting thing about their payment structure, they only allow three 'purchase attempts' per eight day period, at least with normal credit cards.