This is kind of similar to Milo.com which was acquired by eBay in 2010. It was a real-time inventory monitoring/tracking service for local shopping - Shops had

This is kind of similar to Milo.com which was acquired by eBay in 2010. It was a real-time inventory monitoring/tracking service for local shopping - Shops had to install a plugin for their QuickBooks application, which would automatically update store inventory to Milo. It had a search engine front end which allowed users to find items nearby -- https://techcrunch.com/2010/12/02/confirmed-ebay-acquires-milo-for-75-million-investors-make-a-killing/ https://techcrunch.com/2010/12/02/confirmed-ebay-acquires-mi... and https://techcrunch.com/2011/06/15/milo-fetch-allows-local-retailers-to-upload-their-inventory-to-ebay/ https://techcrunch.com/2011/06/15/milo-fetch-allows-local-re... OP should def contact the founder of Milo (whose now a VC) for ideas on scaling, monetization, features etc