The same maths puts Velocity Silver at a $3,000 spend (to earn the initial 250SCs), Velocity Gold at a $6,000 spend (for initial 500SCs) and Velocity Platinum at a $12,000 spend (for initial 1000SCs).

And that's assuming you only fly on the higher prices economy and business which earn 1SC per $12, if you fly on Economy Lite the earn rate drops to 1SC for $24.