Lamp choices will change in 10 years. In a new store, the most expensive part is the HVAC system, lets look at the impact of bulbs in adding added temperature (and more cost) into the room.
Incandescent - 300 degrees

Fluorescent - 100 degrees

LED - 0 added heat

Think of the savings over the lifetime...Roughly $1122 over 17 years per bulb PLUS the savings to to HVAC.
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