Ishant Juyal’s approach
Is this change sudden or was it a trend. Segment by geography Create a chart to see proportion of costs. Like, before 5$ cost was for 10% orders, not its only 1%, 23$ cost was for 20% users, now it is 90%. Such graph. Segment by order types if there is any difference. Then segment by user See if there's any policy change or compensating isers more.