H: STEAM : Half-life2, Portal, Episode 1

I just have a few games (most of you should already have these! but if you don't...) on STEAM for sale as gifts:

Half-life 2 - $4
Half-life 2 Episode 1 - $3
Portal [sold to friend]

Want:

$$ via PayPal (make me a reasonable offer)
I will also consider any other Steam game offers (especially Borderlands or Bad Company 2) even if I have to add a little $$ to sweeten the deal.

Thanks!

added "reasonable prices"