Highest paid fighters at the UFC 106 were Tito Ortis and Forrest Griffin that got paid 250,000 dollars each.

The full list of UFC 106 payouts:

Forrest Griffin: $250,000 (includes $150,000 win bonus)
def. Tito Ortiz: $250,000

Josh Koscheck: $106,000 ($53,000 win bonus)
def. Anthony Johnson: $17,000

Paulo Thiago: $16,000 ($8,000 win bonus)
def. Jacob Volkmann: $6,000

Antonio Rogerio Nogueira: $100,000 ($30,000 win bonus)
def. Luiz Cane: $19,000

Amir Sadollah: $30,000 ($15,000 win bonus)
def. Phil Baroni: $25,000

Ben Saunders: $20,000 ($10,000 win bonus)
def. Marcus Davis: $27,000

Kendall Grove: $44,000 ($22,000 win bonus)
def. Jake Rosholt: $15,000

Brian Foster: $12,000 ($6,000 win bonus)
def. Brock Larson: $25,000

Caol Uno: $20,000
vs. Fabricio Camoes: $10,000
(Both fighters earned show money; bout declared majority draw)

George Sotiropoulos: $20,000 ($10,000 win bonus)
def. Jason Dent: $8,000