The best steals of them all are the listings that have an incorrect title. Finding those are by chance.. My favorite is something like -
Old tobacco card hindu
Since the t206 designation isn't in there - the card will sell for less.
(t206, t 206) -topps -etopps -2010 -2009 -honus -rp -reprint -reprints -grandpasattic (kidding)
^^ that's a good search for weeding out t206's. Also put it in "auction only" format. Don't be afraid to use a "-" to get rid of unwanted cards. I always put -helmar in all my searches.
Just my two cents.
When I first started someone gave me really helpful tips on finding good deals; I'm just returning the favor.
I will say I have a few others up my sleeve, but as everyone else here stated it wouldn't be in their (or my) best interest to share
