VetBox Rewards has three tiers based on how many points you have earned. All subscribers start in the Bronze tier. When you pass 150 points earned you will automatically move up to Silver. After passing 300 points you will enter the Gold Tier. With each new tier, your monthly spending earns even more points:

Bronze: £1 spent = 2 points
Silver: £1 spent = 2.5 points

Gold: £1 spent = 3 points

This is a way of rewarding you even more for continuing to treat your pets with VetBox : )