I need an estimate on having brake pads, rotors, bearings and calipers replaced on a 1996 mazda millenia?

a squeaking sound is probably the wear indicator of the break pads. new pads are around $20. if it is not a grinding noise then your rotors should be ok. if they are not sticking then your calipers should be just fine. if the tire doesn't feel loose then the bearings are also fine. so if you only need break pads your looking at about $100 for parts and installation