Unless the are knowledgeable in militaria, most sellers don't understand the concept that three dissimilar items may constitute a set, or group, even if they are engraved to one person. This is a constant complaint among specialists in every area of collecting with terminology that is specific (and often carefully defined) to that area. I recall a bookseller's forum that had a running thread about how Ebay sellers would list a book as "Very Fine" when it had no dust jacket, a torn page and crayon marks on the title page. Among book collectors "Very Fine" has a definition that most non-collectors wouldn't understand. ["Very good condition for its age" drove them completely nuts.]
O'Hanlon's Corollary says: Never attribute to malice what is adequately explained by stupidity. In a case like this, I think it's more ignorance that stupidity, and I'm always happy to take advantage of that ignorance. That's why the "See Other Items" is an important link in any Ebay listing.
The collector in me hates to see groups broken up, but the seller in me has a tough time arguing with someone who is trying to make a living listing something in a way that will maximize his return.
OMSA 1136/DM 16