CommissionRate
Tablecommission_rate, id prefix comrate. The rate the marketplace takes
from a sale.
Relations:
rules (one-to-many CommissionRule), values (one-to-many
CommissionRateValue).
CommissionRule
Tablecommission_rule, id prefix comrule. Scopes a rate to a slice of the
catalog.
CommissionRateValue
Tablecommission_rate_value, id prefix comval. A per-currency amount for a
fixed rate.
CommissionLine
Tablecommission_line, id prefix comline. The resolved commission for one
order line.
A commission line anchors to either
item_id or shipping_method_id.
It references those records by id, not through a module link.