How much are these DS games worth used?

i would like to sell these Nintendo DS games, they are all used of course and I would like to know the best place to sell them(ex:pawn shop, game stop, etc.) but I would prefer not to sell them online

1)My Sims Party(in original box)

2)The Legendary Starfy(in original box)

3)WALL-E(in original box)

4)Call of Duty 4 MODERN WARFARE(in original box)

5)SPORE creatures(in original box)

6)ULTIMATE BAND(in original box)

7)Final Fantasy Tactics A2(in a gamestope used box)

8)SPONGEBOB SQUAREPANTS THE YWLLOW AVENGER(in original box)

9)The Legend Of Spyro A New Beginning(in original box)

10)NARUTO SHIPPUDEN NINJA COUNCIL 4(in original box)

11)Purr Pals(in original box)

12)Bionicle Heroes(in original box)

i am looking to get cash as I know gamestop is usually crappy with buying games(or overall) I would still like to know and if anyone can give me the price of the games(according to who you are suggesting buy it) that would be extremely helpful(and I am not expecting a lot out of it but I sill want to get an idea thanks)

I didnt check all of them. But from past experience used DS games usually fall between £2-£6 on ebay. But as you stated before that youd rather go to an actaul store. I say if they gave you £15 in total, take it. Up to you.