The highest-reviewed and most popular services at O2 Fitness Rama 3 and their prices are: Gym Only Membership (1 Week / 7 Times) - Prices at ฿1,590 Fitness 1 Day Pass - Prices at ฿690 Gym Only Membership (1 Month / Unlimited Times) + PT(SI) (5 Times) - Prices at ฿6,290