The client wanted to incentivise customers to buy more products. In today's 'cash is king' climate, offering customers cash back is the most popular incentive. The 'rule of thumb' redemption rate is that one in three (depending on offer/mechanism) customers will complete the application. A £30 cash back offer will cost the client somewhere in the region of £10 for each product sold.
There is an associated cost of creating and maintaining a redemption website. We offer good value with this service, but each website has to be costed on an individual basis.