A buyer scooped up a lakefront home in northwest Iowa this week for a record seven-figures.The $9.5 million the person paid for the nearly 25,000-square-foot Spirit Lake, Iowa house represented the "highest price on record for a single-family home in the state," Christie’s International Real Estate said in a press release.The home, called Peace Harbor and sold for the seller by Holly Lovel of Lovell Group at @properties-elleven Christie’s Intern…