Hi Kevin, this is the main forum where we discuss cards, but all buying, selling, and trading takes place in the "B/S/T", short for "Buy Sell Trade":
http://www.net54baseball.com/forumdisplay.php?f=13
Also, to let everyone know that you're not selling cards you could make the post title "WTB: High grade t206s with qualifiers".
"WTB" stands for "Want to Buy".
Best of luck in the hunt!