Who would you pay? Who would deliver them? How would you pick them up? How long between purchase and delivery?

What was the range of prices?

How widely did the Partial Indulgence time range?

How often would a person buy an indulgence? Was it for the very wealthy only?

Was an indulgence to show off your "donation" to the church and your days off from purgatory rather than a personal thing? For instance, a person wouldn't buy an indulgence and keep it in their drawer, right?