That's a very early Jet Central Rhino, along with the two Wrens.

I would go to the Classifieds and research Sold/Unsold engines to get an idea at what you're up against. The market is very "soft" right now; and even though they are NIB, the fact is, they are older and all appear to be propane start. With that said, they are good useable engines for the right person/s, but I wouldn't expect to get top dollar for any of them.

Of course this is just my opinion.