Lumix is a unified search tool for finding products across several stores. It serves the purpose of searching digital products on Shoppy like "Hotstar" or "Malware Bytes". It will filter out the discontinued and out of stock products for you as well.
Currently it has indexed around 5500+ Sellers with 65K+ Products indexed. It currently only supports stores from , but i might add some other websites soon. Incase, you know about some similiar websites (that are popular/used enough), do let me know.