A company operates a mine in a country where the law requires that the owner must restore the premises after the completion of its mining activities.

The book value of the mine is $1,000$ and the provision for expenses restoration is $500.$ The provision for restoration costs was part of the acquisition price of the mine.

The company is testing the mine for impairment.The cash flow generating unit for the mine is the mine, as a whole.

The company has received various offers to sell the mine at a price of $800.$ This price reflects the fact that the buyer will assume the obligation to restore the environment. The disposal cost for the mine is negligible.

The value due to the use of the mine is $1,200$ without including restoration costs.

Determine the value at which the mine will be valued.