Has anyone tried offering this option?  10% seems high, but there might be a tweak to raise your price some to offset a portion?  Any thoughts or experience with this?  

Copy n paste from Airbnb:  

How a non-refundable option works You set your discount, which is typically 10% off the base price in everywhere but China Your discounted rate appears in search At checkout, guests either select your standard rate—subject to your cancellation policy—or the discounted, non-refundable rate If they cancel, you keep your entire payout for all nights booked, minus the cleaning fee if they cancel before check-in A reservation would be eligible if the check-out date is within 60 days The discount is applicable if the reservation is not booked with a pre-approval or special offer