Sol Republic 1-button Relays (1132-31) for $15

The 1-button version of the Sol Republic in-ears, model 1132-31, is on sale for $15 with free shipping at Tanga.com. They come with a 30 day warranty.

Ironically, you get a 90-day warranty if you buy them in certified refurbished condition by seller “Tech Union” with the order fulfilled by Amazon, so Prime eligible for members.