Bestbuy offers Dyson Corrale Hair Straightener for $400 (reg $540) with free shipping.

Product Description:
Special Edition Dyson Corrale hair straightener with a complimentary presentation case is an innovative cord-free styler and straightener with flexing plates that shape to gather hair, allowing for enhanced styling with less heat and half the damage.

• Cord-free
  with the thermal performance of a corded straightener
• Flexing plates
  Go from curls and waves, to smooth and sleek with flexing plates
• Intelligent heat control
  Responds to the thickness, texture, and length of your hair and automatically controls the temperature for optimal styling results
• Less heat, half the damage:
  Flexing plates gather your hair for more control, so you can achieve the same style with less heat and 50% less breakage.¹
• Up to 30 minutes cord-free styling:
  Delivers the same thermal performance of a corded straightener, fully recharges in just 70 minutes.²
• Auto shut-off and Safety lock:
  Switches off after 10 minutes of inactivity for added peace of mind. Safety lock allows for immediate storage after use and TSA approved battery disbaler.
• Travel charging dock:
  Place on the charging dock when not in use to extend run time. Folds to stow in your bag for an easier charging solution at home or on the go.
• OLED screen
  Displays battery level and temperature during use.
• 
  Chimes to indicate your machine is heating up, chosen temperature reached, low battery, empty battery, charging, idle mode and service alerts.
• Three precise heat settings:
  330°F, 365°F and 410°F to suit your hair type, length and desired style.