It makes sense if very few people want to emulate a Phillies player right now.
Chances are, most fans already own the jersey of the team's sole All-Star, Chase Utley. Jimmy Rollins, Ryan Howard, Carlos Ruiz, Cole Hamels, and Cliff Lee have all been with the team forever as well.
Other than that, you can split the remaining players into a few select groups: Doldrum middle infielders; journeymen catchers; young pitchers trying to make a name for themselves; and relief pitchers who don't want to be on the team anymore.
It doesn't make for the sexiest jersey sales, as indicated this morning with the midseason report: