Hello! I have been selling these on eBay since 2015. I may be the sole reason why you can get these for under $15 now. I have had almost no returns in all these years. I provide tech support (pictures, instructions, videos, eBay messages, etc). Buy with confidence! Free shipping within the USA!

8 ohm, 1 watt, 400-20khz. This is one of the best sounding speaker kits under 10mm you can find. 
The size with the included baffle is 10.8x18x5.3mm. Speaker size by itself is 9mm x 16mm x 3mm.

The price is $10.00 including shipping. 
(Check the other listings, most/all charge you additional shipping!!!)
Cheapest price for a speaker+baffle on the internet already, but...
Quantity Discount! If ordering quantities of 2 or more, you receive an automatic 10% discount.

About the Sugar Cube Speakers:
These tiny speakers are the best! Some say they sound better than much larger speakers, and I would have to agree. I'm going to use them exclusively for my HO collection from now on. They are full-range speakers and are surprisingly loud for their size. They come with a baffle that I made. I ship them unassembled, assemble yourself and save!
  
Check out my store for other model railroad items, including more sugar cube speakers: 

Thank you!