I bought it from SIKAI on AliExpress. I ordered it when it was first posted on this thread, on May 11th. It was listed for ~$29 then, but then SIKAI message me (and others) with this:
I ended up paypal-ing them the difference, so I paid $50 in total. The current price is $60.70.
http://www.aliexpress.com/item/Pers...-Watchband-With-Magnetic-For/32335285909.html
Why do the pics show an adapter with them? Did they come with a set of adapters?