Philips Sonicare C2 Brush Heads 3-Pack for $6.39 via Sub & Save + free shipping w/ Prime

Amazon offers the Philips Sonicare C2 Brush Heads 3-Pack for $6.39 when you clip the coupon and subscribe.  That's by far its best-ever price, and you'd pay around $32 at most stores.  Shipping is free for Prime members. Buy Now at Amazon