brickseek.com is a web site where you can do inventory checking for walmart,target,lowes,homedepot,macys,officedepot etc.
We developed a web scraper for brickseek that allows you to get inventory values for product id and zip code.
This scraper works via our internal API!
We developed an API server for brickseek scraper,
sample of usage:
sample output (json)
find export to excel file brickseek data for Lowes: