Pretty low. It was given to everyone subscribed at the time so supply is huge, and it’s an utterly useless trophy ship that never undocks so demand outside of dedicated collectors is nonexistent.
It’s a risky investment. Not only is the volume sold very low, meaning you don’t earn very much over long periods of time, but there’s also a chance that the zephyr will be re-released. Most of the other freebie items, geckos, leopards etc. have been re-released, so it’s entirely possible the zephyr will also be re-released.
If you want to invest long term, invest in things that people paid CCP money for like the interbus shuttle, or for prizes given out during tournaments like the AT ships, the luxury yacht or the pax east pirate corvettes. Although the demand is low for most of these, at the very least it’s less probably that CCP will re-release them, meaning eventually given enough time you’ll make a profit from them.
It’s not really practical with no scanning capabilities. Most practical use for it is I guess checking anomalies for timed spawns with our risking your ship.
Actually brother, it’s an exploration ship - as quoted by CCP:
And here‘s what makes it unique: It has it‘s own special probe launcher (for wormholes) and Sleeper NPC‘s won‘t shoot it in the same way that all NPCs won‘t shoot pods. While flying the Zephyr is as easy as a shuttle, using the launcher will require some core probes and training of the skill Astrometrics to level 1. You can find both on the market or get the Astrometrics skill book by doing EVE Online: Dominion‘s new exploration tutorial.
And, now with the new Scanning Guide tutorial video, you’ll find using the Zephyr for exploration even easier.
Yeah, the Echelon is another one of those limited special release ships. It was intended to be used in Sansha Incursions as a Hacking ship with it’s Purloined Sansha Data Analyzer.