GoGo Furniture needs to purchase glass panes to make glass top coffee tables. Last year GoGo Furniture has two suppliers, BolBol and TolTol. Based on last year's expernece with these two suppliers, GoGo provides you with the following supplier related information:

Supplier related activities	Cost driver	Cost per driver unit	BoIBoI	ToIToI
Returning poor quality glass panes	No. of glass panes returned	$120	25	10
Processing purchase orders	No. of purchase orders	$20	15	30
Receiving and inspecting deliveries	No. of deliveries	$50	15	15
Supplier audit	No. of audits	$1000	5	2
Rework due to poor quality glass	No. of glass top tables reworked	$100	60	15
Purchase price per glass pane			$100	$150
No. of glass panes purchased			500	800

Required:

1. Measure the total cost of ownership for BolBol and TotTol.
2. Discuss which supplier is performing more satisfactorily.
3. What could be done to improve the performance of each supplier?
4. What other performance measures could be used to compare the performance of BolBol and TolTol.