I do not like to sell to a non-paying member or someone I cannot send a message to through BF. New Gold or higher member no problem selling to them.
^^^^ This. I prefer to sell to those who support the forum financially, even our newest members. I can definitely appreciate a dedicated basic/registered member with 100 posts or 10K posts; I just can't understand how they can't (or won't) swing $30/yr. As for selling/buying/trading with someone with zero/low feedback, I handle that on a case-by-case basis.