GCP n1-standard-1 pricing

Question

n1-standard-1 is 1vCPU and 3.75GB of ram.

As per the documentation pricing per CPU and per GB of ram it should be:

0.031611 /vCPU hour - 0.031611 * 1 vCPU      * 24 hours * 30 days = 22.75
0.004237 /GB hour   - 0.004237 * 3.75 GB Ram * 24 hours * 30 days = 11.43 

That's around 34 dollars.

But the GCP calculator and the monthly costs in the same documentation shows as 24$ per month. Is it due to sustained use discounts?

Answer 1

Your result is correct. The answer of the pricing calculator is also correct. Infact you forgot about SUD (Sustained Use Discount). If you let a VM up full time, you can have up to 30% of discount for N1 VM's. (20% for N2)