The engine mounts from Acura are expensive so try getting a quote from an independent repair shop that may use parts from Napa, Moog or other parts source than dealer. The dealer parts price is followed by approx. labor to replace mounts.
Front $250 .9 hour
driver's side and passenger side mount $60 to $90 each .8hours to replace each if done individually
Rear mount is over $300 and is 2 hours to replace.
Labor time to replace all mounts at the same time is approximately 2.6 to 3 hours