It says on the page :
ECHOMAP Plus 70cv/70sv/90sv series combos support the full line of Panoptix all-seeing sonar transducers, including the Panoptix LiveScope system.
You might want to check with Brian@BBGmarine (member) to see if he can beat that price, or if the 93sv Garmin unit would be a better choice if coastal waters are not in your future.