You are in the market for a house. Your effective all-in market borrowing rate for a second mortgage with a 5 year term from a bank is 2.69%. The vendor of one of the houses you are considering purchasing is willing to undertake a $600,000 second mortgage, with a 5 year term at 1.69%, and a 25 year amortization period. The asking price on the house is $900,000. What adjustment to the sales price of the house is warranted if, as part of the purchase, you take up the vendor's second mortgage offer?