Online Prices Are Not Real
Well, not everything you see online is real, and sometimes, this might apply to real estate prices or monthly payment estimates too. While it could be that the operators of the websites forgot to update the prices or that the wrong estimates came from wrong calculations, it is in your best interests to disregard the monthly payment estimates on real estate websites.
On the other hand, why put up the wrong prices and estimates on your online real estate website when you can place adverts for agents with better estimating skills? That would be a win-win for everyone – better use for the website and better accurate information for people checking the websites – instead of misguiding people with inaccurate monthly payment estimates.