Olives From Spain When A Supermarket Place An Order For A Product,does It Request Free Case Of The Product From Themanufacture?

When a supermarket place an order for a product,does it request free case of the product from themanufacture? - olives from spain

I am a supplier of olive oil and vinegar from Spain and again in this match. I was told that if an application gets to the supermarket chain on a large order of its shops, each shop a case of free products. I want to confirm whether this is true or not because I do not want this to come out of his pocket.