Use this for the prices and listings of chosen sellers on one event. Use get_event_seller_series instead to find the seller letters and how they moved. The market of chosen sellers on one event, anonymously. Name sellers by the letters `get_event_seller_series` labels them with ("Seller C" is `C`). `points` is the series of their listings over the range, per snapshot: lowest, p25, median and p75 price, list and all-in, tickets and listings. `sections` is their current book per section: listings, tickets, lowest and median price. Give `section_ids` to narrow both to those sellers inside those sections. Only a seller whose peak live listings over the range reached 10 can be chosen; any other letter selects nothing, and `sellers` lists the letters that did. An account whose plan does not include seller readings gets a plan_required error instead, with `entitled` false and `required_tier` naming the plan that unlocks it: say the plan, never that there are no sellers.
ConnectorOAuth