Trying to find value of this lot of 6 boxed nes games: Bubble bobble, Contra, Gumshoe(hangtab), Super Mario Bros(hangtab)

[swlovinist]

I need some help. I am looking for a fair selling value for this lot of 6 boxed nes games. I am looking for the value of the entire lot. Here is what I have

boxed Super Mario Bros Hangtab no instructions
boxed Gumshoe Hangtab no instructions
boxed Bubble Bobble complete
boxed Contra no instructions
boxed Goonies II no instructions
boxed Kid nikki no instructions

http://s268.photobucket.com/albums/jj28/swlovinist/boxed%20nintendo%20games/