Here is the entire "National Average Cost Of A Wedding" graphic compliments of The Knot:

While I don't think it is necessary to spend upwards of $1,700 dollars on Wedding Ceremony and Reception music - you do get what you pay for when it comes to DJ's.

When shopping around for your DJ, don' let price be your guide. Make sure they are well equiped and with quality equipment. Make sure they have backup plan in the event of an equipment failure. Make sure they have all the tools, experience and attitude to make sure your event goes off without a hitch.