Table 8.

The expected total cost for $\beta =0.3$, $\rho =0.6$, usage rate (u) = 500 and.$\alpha =0.1,0.3,0.5$.

τ (months)	$k$	ETC
		$\alpha =0.1$	$\alpha =0.3$	$\alpha =0.5$
1	36	1360	1449	1472
2	24	828.475	944.508	994.831
3	12	657.068	802.148	875.946
4	9	575.949	749.925	838.775
6	6	504.417	728.901	822.912
9	4	472.841	744.371	852.178
12	3	470.573	767.213	897.424
18	2	489.308	842.881	903.147

ETC, expected total cost.