Find specific sellers typical behaviour.

[RVRX]

look at other listings by the seller and see how they tend to price their items, and by how much they typically drop? E.g.: user TOSHIYUKI_YOSHIRO prices everything high $300-200, and drops by ten percent regularly until he gets down to about $83 (or 10% higher or lower). [at which point he deletes the listing and remakes back at the original high point, but this specific part might not be possible to track without a DB].