Hmmm, sitting in a Florida warehouse for 16 years. Judging by the rust on the pins holding the data plate to the engine, the pink (water saturated) and/or broken desiccate plugs on the cylinders, and missing paint on the mags and other accessories, these engines have core value, at best.
I suspect this was a salvage sale. They may very well be "brand-new" engines that were purchased in 2006. But methinks there are details left out of the story of how the current seller came to acquire them....