Selling Steam Acc + CS and others

hey, im considering selling my steam account, ive spent a fair bit on it now and dont really play it, so i was wondering if i could see it and make some of my money back

games on it include:

counter-strike
counter-strike:source
condition zero
condition zero:deleted scenes
Day of defeat
Day of defeat:source
half-life
half-life blue shift
half-life opposing force
half-life 2
half-life source
half-life 2
half-life 2 episode one
half-life 2 episode two
half-life 2 lost coast
half-life 2 deathmatch
half-life deathmatch source
deathmatch classic
grand thef auto: san andreas
portal
ricochet
team fortress classic
team fortress 2

im not 100% on the cost of all of these but i *think* its worth somwhere between £20-£50, if someone can help me with these prices would be nice

ONCE AGAIN, IM ONLY CONSIDERING SELLING, depending on the price i get.
paypal preffered, as i dont have any other payment methods


it hasnt been cheated on, hasnt been banned, or had anything bad against it.

once i find out what its really worth ill add people on msn for more details