mwave offers this pair of Alpine 6.5" 2-Way Car Speakers
, model no. SPJ-17C2, for $38.95
with free shipping
. That's the lowest total price we could find by $7, although we saw them for $2 less in June. They feature 40 watts RMS power handling (200 watts peak), a 35Hz to 25kHz frequency response, and a 2.4" mounting depth.