the starter is behind the engine under the intake manifold, and above the axle. You pull it out through the bottom with the car in the air. $391 is a fair price. Since almost half of that is probably the price of the starter (retail markup). they list for @ $150-200 so it would have depended on which was the local availability. $60-90 is definitely reman, but that is also wholesale, most shops do not pass that price along, they adjust it to retail.

We have a place we stay at near my family in lighthouse point. I've been going down at least 2 times a year my entire life, when my grandparents bought a place in the mid 70s before i was born.