Fiio F1 In-Ears for $13

This is a straight up sale, not a coupon, you can get the new condition Fiio F1 in-ears for $13, sold by the Fiio Amazon store, with the orders fulfilled by Amazon, so you get free 2-day shipping as a Prime member. Non-Prime members need a $25+ order to get free shipping, eg two pairs of these.

These are angled, cube-y IEMs. They currently have just four happy customer reviews.