Selling a house can make the listing price look wonderfully enormous right up until the bills start nibbling at it. A home that sells for $400,000 does not necessarily put anything close to $400,000 into the seller’s bank account, because several costs can come out before the final check arrives.
That does not make selling a bad deal. It simply means the asking price and the amount of money a seller actually pockets live in two very different neighborhoods. Knowing where those dollars can go makes it much easier to set a realistic selling price, evaluate offers, and avoid celebrating a big sale before doing the math.