They are just using an example down payment, it's not what they are asking. Trulia doesn't sell houses, they just advertise them. To use your own figures just google mortgage calculator and find one you like, plug in your numbers and your off.
Tom Brady SFR, e-PRO, SRES, GREEN, BPOR
Licensed Real Estate Salesperson
Notary Public, Retired N.Y.P.D. Lt.
#1 Listing & Selling Office on Long Island
Charles Rutenberg Realty, Inc.
255 Executive Drive - Suite 104
Plainview, New York 11803