Edited December 31, 2017
at 04:04 AM
Monoprice has their excellent "Large-Driver Bluetooth Wireless Earbuds" [monoprice.com]
on sale for $11.99. Save an additional 15% with code "NEW18". Shipping is available starting at about $2.50 for "Monoprice Saver".
A few notes:
I own 4 pairs of these earbuds for various uses (gym, travel, jogging, etc). The audio quality is excellent (for bluetooth) and the build quality is also great! If you're looking for a cheap, no frills pair of bluetooth earbuds with good audio quality, you'll be very happy with these! I've owned several cheap bluetooth earbuds from Monoprice and various brands on Amazon, these are the best in terms of audio quality and volume capability.
Please note that the earbuds are pretty large and stick out quite a bit from your ears. Personally it doesn't bother me. They're not heavy, but many people complain about this fact in the reviews so it's something to be aware of.