The efficiency is in the long term cost, IF you can get the cheap panels.
An it appears the day of the cheap panel isn't here yet..
I just got off the phone with the dealer and it turns out that
Solar Panels : Solar Panels Direct $1.74 per watt
is pulling a bait-n-switch with their shipping cost.
It was:
$58.80 USD 4 $235.20 USD
Shipping and handling $101.74 USD
Total $336.94 USD
And now, they want $240 for shipping. More than the price of the panels..
I think maybe I'll wait until they have $1-a-watt panels at Lowes..