Typically Sony's entry-level mini Bluetooth speakers have started at $50. But the SRS-XB01 lists for $35 (£30, AU$50) and sometimes gets discounted to $25. That's pretty inexpensive. While it's lightweight at 5.4 ounces (154 grams), it manages to avoid feeling cheap.
The Sony SRS-XB01 is an attractively designed mini Bluetooth speaker that sounds decent for its size and is relatively inexpensive; It's shower-ready and has speakerphone capabilities
Some larger "mini" speakers in this price range deliver fuller sound with higher volume