My girlfriends PlayStation 3. That one hurt the bank balance. I’m a gamer and so is my girlfriend, so I ended up getting her a PS3 for Christmas one year, I was saving up for a good deal beforehand to get it. I happened to buy it a few weeks before Christmas and they had just realised the one with the huge upgrade to the hard drive. Being impulsive I got this one and it set me back even more than I anticipated. But the damage was done and dusted. Personally gaming as a hobby has taken the biggest chuck out of my income. But a console would be the biggest single buy.