each of the major websites usually sell on eBay also (for a cheaper price)
Here is a list to start looking at though.
http://www.AGIproDJ.com
http://www.PROaudioStar.com
http://www.UniqueSquared.com
http://www.IDJnow.com
PS
never pay the Price they have the equipment listed for on the site. Almost all the sites have a LIVE chat feature now where you can negotiate the prices. They have to “appear” to sell the items at a certain price point to mainitain their “Authorized Dealer Status”
PSS
Only buy from Authorized Dealers, if you don’t there is NO warranty on the equipment you buy…
I hope this helps…
If you have any additional questions feel free to hit me up on http://www.facebook.com/vinnyblanc