A 500k life insurance is a lot of life insurance. It’s the most life insurance that you can get as an individual. You could get more if you had a family, but as an individual, you’re capped at 500k.
However, it depends on a lot of factors, but on average, 500k in coverage will run you $100 to $200 per month. You can compare quotes for life insurance from various companies on the internet, and you should shop around to make sure you’re getting the best possible deal.