eBay has the Pioneer Andrew Jones Dolby Atmos Bookshelf Speakers (Pair, SP-BS22A-LR) for $149 with free shipping. Features 4" Structured Surface Woofer with oversized magnets and vented pole pieces for improved bass response.
Amazon has the Amazon Echo Voice-Controlled Bluetooth Speaker (Black or White) refurbished for $60 with free shipping. Retail price: $165. Has good Amazon Reviews.
Amazon has the Aptoyu 20W Dual-Driver Portable Bluetooth Wireless Speaker w/ DSP for $19.99 - $9 off with coupon 4FIHGEYW = $10.99 with free shipping on $25+ or with Prime. Equipped with the advanced technology, compatible with all Bluetooth compatibility devices.
Has good Amazon Reviews.