Crutchfield offers the Klipsch R-10SW 10" Reference Series 300-watt Subwoofer for $199.99 with free shipping. That's the lowest price we could find by $78. (For further reference, we saw an open-box model for $56 less last month.) It features a frequency response of 32Hz to 120Hz and a 300-watt peak power.
Now, you can order a coronavirus antibody test online, even without a prescription from your doctor.