Iron Gray Sea

War has engulfed the other earth, the parallel universe that Lt Commander Matt Reddy and the crew of the USS Walker now call home. With every hard-won victory and painful defeat, Reddy and the Allies encounter more friends—and even more diabolical enemies.
 
Cutting short his “honeymoon,” Reddy sails off in pursuit of Hidoiame, a rogue Japanese destroyer that is wreaking havoc in Allied seas. Now that Walker is armed with the “latest” technology, he hopes the four-stacker can handle a straight-up fight against the bigger ship.
 
Elsewhere, the long-awaited invasion of Grik “Indiaa” has begun, and the Human-Lemurian Alliance is pushing back against the twisted might of the Dominion, even as political machinations threaten the Alliance from within. But the savage Grik have also mastered “new” technologies. And their fleet of monstrous ironclads and a bloodthirsty army are finally massing to strike...
 

Standard and Primary covers are widely available through general retailers. They often have higher print runs and can be cheaper, especially during sales.

In contrast, Direct Market (DM) and variant covers are primarily sold in comic shops. DM editions tend to have more limited availability and may be more valuable to collectors.

The main differences lie in artwork style, availability, price, and collector appeal. Ultimately, the choice between standard and variant covers depends on personal preference, budget, and individual collecting goals.

Comic book enthusiasts have various formats to choose from when collecting their favorite stories.
Here's a brief overview of the main types:

Omnibus

• Large, hardcover collections
• Usually contain complete runs or extensive story arcs
• Typically 800-1000+ pages
• Higher price point, often €100-€150

Oversized Hardcover (OHC)

• Similar dimensions to omnibus, but thinner
• Collect shorter runs or story arcs
• Usually 300-600 pages
• Priced between €30-€50

Hardcover (HC)

• Standard-sized hardcover books
• Collect 6-12 issues typically
• Similar dimensions to single issues, but with a hard cover
• Priced around €25-€35

Trade Paperback (TP)

• Softcover collections
• Standard comic book size
• Usually collect 4-6 issues
• Most affordable option, typically €15-€25

Other Formats

• Absolute Editions: Oversized, deluxe hardcovers (mainly DC Comics)
• Compendiums: Massive paperback collections
• Graphic Novels (OGN/GN): Original stories not previously released as single issues

The choice between these formats often depends on personal preference, budget, and collecting goals. Omnibus and OHC editions offer larger artwork and more content but at a higher price, while TPs provide a more affordable way to collect complete story arcs