If you're able to buy it in the US, yung going rate is:
Speed Cobra Single Pedal - P6700 to P9000
Speed Cobra Double Pedal - P14000 - P18000.
Demon Drive Single P10,500 - 14,500
Demon Drive Double P22,500 - 29,000
Iba yung price nya in different shops with shipping charges. Correct me if I'm wrong.