Ali
One of our users reached out today ask for a feature request. They are working with Google Shopping API and wanted to ask for In Stores Near You block to be parsed. This block shows up when you add tbs:local_avail:1 parameter.
Playground link:
https://serpapi.com/playground?q=red+headphones&location=75032%2C+Texas%2C+United+States&gl=us&hl=en&tbm=shop&tbs=local_avail%3A1&no_cache=true
Screenshot: