20%-40% off Velocity Points Purchase: e.g. 250,000 Points for $3510 (Usually $5850) @ Velocity Frequent Flyer

Looks like Virgin Australia have their points on sale for those needing a top up.
Discount is tiered, depending on how much gets purchased:-

10 000+ points for 20% off
100 000+ points for 30% off
200 000+ points for 35% off
250 000 points for 40% off

Points are purchased in increments of 10k.