Can you afford to lose $15,000, $20,000, $25,000 or even more when selling your home? This has become a common occurrence among homeowners who travel down the misguided path of advice they trust from online sites like Zillow who provide bad information. Their Zestimate is consistently off by a median of 4.7 percent compared to the actual sale price, according to the company. That’s a significant difference in the valued of a typical house. Real Estate Brokers have long complained that the numbers give seller, in particular a distorted view of their homes true worth.