L4D Bundle

They keep popping like mushrooms after rain...

As far as I'm concerned there's nothing you can do. You could try contacting Steam support and get maybe get the bundle back in your inventory and have L4D removed but I'm not sure.
Why did your friend give you the keys to get it, by the way?

Anyway, no begging allowed, sorry.

Get ready for a hurricane my poor child because you just opened the wrong gates.

ok. you didn't get ripped off, you just screw yourself (actually, you screw your friend, what is worst).
AND now you are begging, that is not allowed here, and this is not even a troll post with a hidden GA... so you are fucked.

Ask steam support to return your bundle and remove the game; then give the bundle to your friend. They will only remove the game from your library once.

Is there even a point to getting L4D1 anymore?

I think everyone hit their head a bit too hard. He's not begging.