Intellivision game value help

Greetings. I've got an alright copy of Mission-X for the Intellivision, with the box, manual, and overlays. I looked in this site's rarity guides of Intellivision games, but was unable to find the title... I looked on Google and Wikipedia, but was unable to find a straight value there, too. Any help with the proper pricing of this would be greatly appreciated!

It's in the rarity guide, you can search there for "Mission X" without the dash and you'll see

RarityGuide.com - Intellivision Rarity Guide - Online Price Guide

Its listed there as $7.00 for a complete copy, and I agree with that value as that particular game isnt worth very much.