Fun fact: Tales of Symphonia by itself has sold more than 1.5 times as many copies in the US as every Tales game released on a Sony platform COMBINED.
Leaked NPD numbers:
Symphonia - 465k through
Jan 08 Feb 07?
Legendia - 74k through Jan 08
Abyss - 68k through Jan 08
Radiant Mythology - 30k through Jan 08
Destiny - 68,614 through 2005
Destiny II - 56,864 through 2005
Even Vesperia and the god-awful Dawn of the New World sold twice as well as any of the Playstation Tales games. The series just doesn't sell on Sony platforms in the US for whatever reason.