Hey guys, noticed this on Bestbuy's site, and while it isn't huge savings I figured it was worth mentioning.
Bestbuy has a 15% off accessories promotion when you buy any game, I'm not sure if they meant for it to be included but you can buy any game even a cheap $3 game and it'll trigger this allows you to save some money on these headsets as well as other more expensive accessories.
The PS4 Gold Headset is $100 -15% it becomes $85 then add a $3 game bumping it to 88.
Turtle Beach XO Four is the same, additionally the discount is even better if you buy the more expensive ones like the XO Seven.
Wii Fit U with Balance board is about $10 off bundled with a $3 game
Turtle Beach XO Seven is $21 off after the 15% and adding a $3 game.
Note preowned games don't qualify and PSN/XBL Credit doesn't.
Checking all the searches this is the lowest price for a game.