Life insurance pricing is determined by age, health and type of policy. The cost is called your premium. Charges for insurance are different than costs. There are also two person policies called survivorship life insurance which reduces the costs of a one person policy with the same insurance benefit. But your health, your age and the type of polciy you buy determine your premium and thus your cost.
Life Insurance is a mortality product. Individual life insurance is priced based on your mortality. Your mortality is calculated based on your gender, age, smoking status, health history, and current medical condition. There are also additional items that impact mortality like motor vehicle violations, hazardous vacation or recreational activities. There are two types of life insurance: term and permanent. Depending on the length of coverage will impact the premium as well.
The cost of life insurance varies widely with the amount of coverage, the type of policy, and the age and health of the applicant. To find out what the lowest priced policies would be for someone with your age and health, you can go to a website that offers "instant" quotes. The rate will come up and you can change the variable to see what different types and face amounts would cost. Keep in mind that your rate could be higher based on your health and other risk factors.
The amount of coverage that you can get for any given premium amount depends on your age, health history, tobacco use, gender, height-weight, etc.
Your independent agent will give you rates for many companies and help you understand which companies will approve you.