Returns the original cost schedule from the inventory items, it uses the trip tiers as a reference in case the tier does not exist in the original cost, it calculates the tier using the pricing algorithm
cost schedule from the trip
cost schedule from the itinerary
original cost schedule
Returns the original cost schedule from the inventory items, it uses the trip tiers as a reference in case the tier does not exist in the original cost, it calculates the tier using the pricing algorithm