A net debit of.80, or $80, is made by the customer after paying a premium of 2.30 ($230) and receiving a premium of 1.50 ($150).
In general, a premium is a cost that is incurred above and above some fundamental or intrinsic worth. Relatedly, it is the cost associated with being shielded from a loss, risk, or injury (e.g., insurance or options contracts).
A premium is a recurring monthly payment that the policyholder must make to the insurance company. The new business premium for an insurance firm is the sum paid out on new contracts for a specific fiscal year.
As a result, the phrase "at a premium" refers to an asset that is being sold for more than it is actually worth. For instance, in a takeover, the acquiring business frequently pays more than market value for the stock of the target company.
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