Grano BV and Henco BV manufacture fairly similar remote-controlled toy cars. Sido BV, a retailer of children's toys, expects to buy and sell 4000 of these cars each year. Both Grano and Henco can supply all of Sido's needs and Sido prefers to use only one supplier for these cars. An electronic link will make ordering costs negligible for either supplier. Sido wants 80 cars delivered 50 times each year. Sido obtains the following additional information.

Sido requires a rate of return of 15% per year on investments in stock.
Required
1. Which supplier should Sido choose? Show all calculations.
2. What other factors should Sido consider before choosing a supplier?

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Grano Henco 49 10 150 cars Purchase price of the car Relevant incremental carrying costs of insurance 50 materials handling, breakage, etc., per car per year Expected number of stockouts per year resulting from late deliveries Stockout costs per car Expected number of cars sold that will be returned 20 cars 25 40 cars 21 626 140 cars 21 owing to quality and other problems Additional costs to Sido of handling each returned car Inspection costs per delivery 20 28