These domains do not have any site content, PR or SEO ratings - they are unblemished... If I were to sell them, what would they be worth? Could I lease them? Thank-you for your advice.

I doubt they're worth anything more than what you paid for them at the moment. Ultimately a domain is worth what someone will pay for it. Just for fun I looked to see what sites were on benjy.com, benjy.net, and benjy.org. All three of those extensions will likely be worth more than the .eu and .biz versions.

None of the three is currently being used for anything at the moment other than coming soon sort of things. If someone were interested in a benjy domain I'd think they could easily buy one of those three without spending much.

It's possible someone might want the domains, but at the moment it doesn't look like it.

What's "benjy" mean ?

Registration price I'd say. And you need luck...

Maybe it's the name itself?

Thank-you. I have some-one interested, so I will see what they offer.