Single Price for multiple Products

[janitkumarjoshi]

Single Price for multiple Products.

Example: I have three Products like Product1, Product2 and Product3 with Price $200, $300 and $400.

If Customer Purchase all these three Products then he will get all Products in just $500.   Single Price ($500 in my case) will be set via our custom app. admin can change it.

Is any Graphql API is available for this?