domain endGMO.com

What is the meaning of this domain?

GMO stands for "Genetically Modified Organisms" which are used as unnatural food ingredients.

I see

Your buyer is likely an activist group or organisation against this thing. I'm sure the issue may be important, but still a niche buying opportunity. Little value, in my view (reg fee territory)

The idea behind is cool, but exactly, little interest for business, thus no resale value. True, it's good for some activists platform, but unlikely you'll get some $$ from them.
If you already bought it and have a year ahead of you, put a tag of like $200-300 and put on all platforms available (own page/Afternic/Sedo at least).