These Philips Bluetooth Noise Cancelling headphones are on clearance in Walmart stores for $10-30. They sound good without exaggerated bass. There is only one issue though: too tight (too much clamping force). We can easily address this issue with nothing but some water.
You can find these headphones with this link (SKU 54383955).
If you want more NC and/or over-the-ear type, then consider the Philips SHB9850NC.