Plantronics has announced a price decrease for the M100 Bluetooth headset. Plantronics M100 Headset Plantronics has announced a price decrease for the Plantronics M100 Bluetooth headset. This MSRP price change will take effect March 1st, 2011. The current MSRP for the Plantronics M100 is $79.99. The new MSRP will be $69.99. Product summary: The Plantronics M100 headset sounds natural, feels natural and is the perfect companion to any Bluetooth phone. It may be so comfortable you could forget you’re wearing it. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website