Bill, the first place I would try is right here. No fees at all. Figure out how much you want for each of your strikes. Post a list of what you have and if you want to trade for what you need. Or you can post what you want for them if a trade is not worked out. You may end up getting some that you are wanting without spending a dime. And you will make a trade friend in the process. I for one would like to maybe work a tade with you.

Dennis
SS-094