mwave offers this pair of Alpine 9x6" 3-Way Car Speakers
, model no. SPJ-69C3, for $45.91
for shipping. That's the lowest total price we could find by $30, although we saw them for $10 less in August. They feature 60 watts RMS power handling (300 watts peak), a 30Hz to 28kHz frequency response, 2.8" mounting depth, and more.