My grandmother is a farmer of Zhao family in Kaixian County, Chongqing. She is 69 years old. How much does it cost to buy over-age insurance, that is, rural minimum living security?

Rural subsistence allowances are government relief funds, which are shared by all village collective members. You don't have to buy it, it's about 3000 a year (reference).

You should be talking about the social endowment insurance introduced in 2009. Your grandmother was 69 years old at that time. According to the policy, she can be directly insured without paying money, and she can get 80 yuan every month and 80 yuan after 70. If you were not insured at that time, you can go back to the local social security office to apply for insurance.

Other insurance involves specific clauses such as immigration, household reform and retirement of enterprise employees. If you don't know your specific situation, you can't give a detailed answer. I suggest you go directly to the local social security office to explain the situation and consult.