The prize is a new minibot called "Meto Drake".

There are a total of 4 different versions that you can get when you press redeem:

Permanent: 3% chance.

1 Year: 9% chance.

30 Days: 25% chance.

7 Days: 63% chance.

This was a test performed by me after coding it to ensure it's working correctly and the percentages are right:

29 Redeems tested:

18 were 7 days

8 were 30 days

2 were 1 year

1 was perm