Minimoon question - Whislter BC

FH and I are planning a trip to Whislter for our mini moon. I checked the offical site and its going to be about 3500 for 5 days Dec 20th -25th, flight, hotel and lift tickets.

I was wondering is it better to go through a travel agent, the offical site or any other site to get a good price... and is this a good price.

Any info would be helpful!