We don't have a published price list for San Leandro specifically, and we're not going to invent one. What we can tell you is that jobs on original 1959-era hardware tend to run longer than a straightforward spring swap on a newer door, because matching an obsolete torsion size or finding a bracket that fits an old track mount takes more time on-site than pulling a part off a shelf.
If you want a number before we show up, call and describe the door - age of the house, whether it's ever been serviced, what it's doing. We can usually tell you over the phone whether you're looking at a same-visit fix or a return trip for a part.