I have had a bunch of SMS games in my trade box for awhile and I can't seem to get rid of them. Most of them don't have their manuals though because I bought them for their manuals to complete my games. If they are complete then I would probably pick them up but otherwise you will probably be stuck with them for awhile as most people want complete games.
P.S.- If you are interested in what SMS games I have available, you can check my account on GameTZ.com.
My user name is Atarian75. Or better yet, here is a straight link -
http://gametz.com/user/Atarian75.html