Tracing stallers

Okey here is the story.

One day i reach lv 63 and wanted to found a good 65 blade for lv 64. I saw nice on in stall network but he was too expensive so i tought i could lower the price a bit. Then i was walking/riding/screaming 3 hours but no luck can somebody help em with any program that actually trace stallers and their items? Thanks i hope it exist.

doesnt exists.
had that problem too with a lvl 68 bow but after 1 hour searching i found it and saved so like 10 mio gold ;)

The problem they can stay everywhere, sometimes in buildings too, thanks to grafik bugs ^^