It surely depends upon context. The "saving of shed loads of cash" applies in relation to lights which are on for substantial amounts of time. There clearly is no significant running-cost saving to be had in relation to a light which is only on for 2 minutes per day, given that it costs virtually nothing with any sort of lamp/bulb!This "save shed loads of cash by changing to LED lighting" thing is out of proportion IMHO.
Kind Regards, John