“The price of prime oceanfront real estate on Whidbey Island just keeps going up.Records at the Island County Assessor’s Office show that a Seattle woman recently paid $3.4 million for 70 acres of land overlooking Double Bluff beach. It is the largest residential land sale in the history of Whidbey Island.Seattle’s Dana Garvey, the land’s new owner, paid this price for a piece of land she said has scenic value for everyone who lives on Whidbey. Her purchase makes her land the most expensive sold by almost $700,000.Part of what attracted me to the property was not just its scenic value but that it adds to the scenic value of the whole island, Garvey said Thursday. I don’t want to change that at all. I’m hoping to keep it exactly as it is. Garvey, who currently resides in Seattle, said she may eventually add a single-family residence to the property. The nursery that currently sits on the bluff property will remain, she said.Garvey, who up in a rural area near New Orleans, said she hopes her two young boys eventually will spend time at Double Bluff.The property’s previous owners, Craig and Ruanne Smith, purchased the acreage in September 1990 for $1,198,012 according to records in the county assessor’s office.Todd Bitts, an associate broker for Coldwell Banker/Tara Properties who tracks land sale prices in the county, said the previous residential sales record was $2.775 million. That was the price a buyer paid about 18 months ago for the 26-acre North Light Ranch. Bitts, along with Candace Jordan and Mariellen Tissot, were the selling agents for that property.Another piece of residential property north of the ranch on the market at $4.25 million could eventually break the record set by Garvey’s purchase, Bitts said. “