Say you sell two variants of a product, at two different price points. The variants are from two different brands, A and B. Both are similar, except for the choice of colours. The choice of colours available at Brand A is different from, but also compliments, that of Brand B. A shopper walks in. He is seen moving along the aisles that contain both the brands.
The client was already running a rewards program with one of their partners, who procured and provided gifts from multiple sources. The program was meant to reward customers who completed a specific denomination-based transactions. But the rewards were either boring and unimaginative.
Shopping is a habit, as basic as the need to bathe. But offer your customers cold shower, and they will stay away from the water, forever. On the other hand, hit them with vapours of personalized promotions and they will flock your store.