Many store locator pages are powered by back-end APIs served by a contracted third party "brander marketing / store finder" company e.g. RioSEO. There is no need to duplicate the code to talk these store finder companies across multiple spiders. Rather a common spider is written in this directory which can then be called on by brand specific code e.g.
In most cases the brand specific code will link the brand to a name suggestion index entry and apply any tweaks that the author considers appropriate as illustrated above.