Yes, cheap soundbars are worth buying if the target is clearer TV sound, stronger dialogue, and basic Bluetooth playback without paying for premium surround hardware.
The value is strongest when the TV speakers are weak and the room is small or medium-sized. In this price class, a simple 2.0 or 2.1 bar can still be a clear upgrade if it has decent tuning and a practical TV connection.
They are less convincing when you expect real Atmos, deep bass, rear-speaker immersion, or wide-room output. Cheap soundbars should be judged as practical upgrades, not as replacements for larger cinema systems.
What compromises are common on cheap soundbars?
The most common compromises on cheap soundbars are simpler channel layouts, weaker bass hardware, and fewer premium connection features.
Most models in this price range are 2.0 or 2.1, and separate subwoofers are rare. HDMI ARC is common enough to look for, but a large number of cheap bars still rely on optical, Bluetooth, or basic HDMI-less setups.
Dolby Atmos and eARC exist in the budget range, but they are exceptions rather than baseline specs. If a cheap model advertises cinema effects, check the actual channel layout and connection type before treating that claim as a real hardware advantage.