> what you call ads it's actually called upselling. Are you sure you don't mean cross selling? IIUC upselling means trying to sell a customer a more expensive

> what you call ads it's actually called upselling. Are you sure you don't mean cross selling? IIUC upselling means trying to sell a customer a more expensive version of their chosen product, while cross selling means trying to sell extra products which combine well with the customer's chosen product.