Amazon offers its Prime members the Sposato by Sony Platinum Series 6.5" In-Wall Speaker, model no. CWSIW150, for $17.20 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it costs $9.59.) That's $83 off list and the lowest total price we could find. It features a 6.5" cone woofer, 1" pivoting dome tweeter, 50Hz to 20kHz frequency response, 8 Ohms impedance, 85 dB sensitivity, early reflection damper technology, and removable covers that can be painted. Deal ends December 23.

Note that this is the price per speaker. (It's not sold as a pair.)