For the sake of comparison, the agents marketing a high country station on the other side of the lake, Halfway Bay Station, expect it to attract offers over $50million.
In 2014, another large farm near the resort, Kawarau River Station, was bought by the developers of Frankton's Remarkables Park for just over $8million.
Remarkables Station, which will be placed under a covenant in the coming months that will protect it in perpetuity, will become QEII's first working farm when it takes over ownership in two years.
QEII chairman Bruce Wills said it was rare for the trust to agree to own a property, as its usual practice was to help landowners protect their properties with a QEII covenant.
The properties it already owned were mostly small areas with precious biodiversity, Wills said.
"Nothing anywhere near 900ha, and there's no other working farm."
However, the trust expected the farm to be economically self-sustaining for the foreseeable future.
It would protect its native biodiversity, and hoped to provide more opportunities for public access, he said.
Open landscapes in the Wakatipu Basin had come under increasing pressure from subdivision and commercial development because of population growth and tourism.
Jardine said his family had endeavoured to improve and enhance the property over the time it had owned it.
"Having QEII as the caretaker of this property gives us the comfort and assurance to proudly pass over this gift for all New Zealand to enjoy and appreciate."
Jardine said they began thinking seriously about the land's future about four years ago.
"The main thing is our age — we've been thinking about the long term."
They decided to act sooner rather than later and, having placed an area known as the Jardine Boulders under a QEII covenant in 2014, were familiar with the trust's work.
"Why wait? We're ready for it — we know QEII and enjoy working with them."
In 2016, the couple gave their former home and the 4ha lakefront site it sits on to the University of Otago for use as a research retreat.
They plan to retain a small block of land surrounding their present home.