$12 plus $5 shipping. These speakers don't get the best reviews in terms of their reliability, but it seems they are worth the risk at $8.50 each.
Product Name: Vaux Portable Speaker & Battery for 2nd Gen Echo Dot
Offered in Carbon Color
Capacity: 2500 mAh
Suitable for indoor/outdoor use
Dual 52mm drivers and passive radiator provide impressive sound and bass
3.5mm aux input
Run Time: ~6 hours
Houses and powers second-gen Amazon Echo Dot
What's in the Box?
2x Vaux Portable Speaker & Battery for 2nd Gen Echo Dot
$79.98 (for 2 similar) at Amazon
Ninety7 90 Days Warranty
Tuesday, January 7th - Monday, January 13th