Today the Champion Mode of FNC was added to PSN for $5 along with the full game, but if you want just parts of it, you can buy the Champions Mode and additionally:
Fight Now for $5
Legacy Mode (Career) and Boxer Share (don't know what's that) for $10
Online Mode for $10
for a game that you can buy new for under $29 (or used for $15 + the online pass), it might not seem much, but I wonder if they're planning to do this with new games too. it's great for games with multiplayer modes you don't really care.
ps: really weird timing with Frazier passing away!
the words above were backed by NUCLEAR WEAPONS!