Sonic Electronix offers two MB Quart 5.25" Reference Series 80-watt Car Speakers
, model no. RKM113, for $59.99
with free shipping
. That's the lowest total price we could find by $10. They feature a 30mm tititanium WideSphere tweeterm accenting voice coil collar, ABS composite basket, spring loaded terminal, and IMPP speaker cone.