Perceived value means different things to different people.
It would be a long time before you would save in electric what it cost to buy the regulated LEDs needed for having shore power. They do produce considerably less heat though. That may be a huge value on a hot night.
Power is costlier when you have to produce it yourself and we boondock. The gas saved by not running a generator as much or at all will add up and pay for the less expensive unregulated ebay LEDs in no time.
Actually, not having to listen to a generator is PRICELESS!