I changed my mind. I got a hug from a random playing online, boxed up the game, and went to the UPS drop site. I walked in, but couldn't do it. I felt like a jerk, seriously, for not helping that random finish the game. I enjoy it too much. I even messaged him, telling him I'd be back on later so we could go through more chambers. This is the first 360 game I've 1000'd and am not trading in. Damn you Valve.
Plus, with the DLC coming for free in the summer, there's no point in me rebuying this when I already got it for a nice price.
If you need help in the game, or just a hug, message me online.