Class 4: Product differentiation

This time when I went shopping, I tried to wear (The Marketing Cap) as dr.Bop says, I tried to figure out what's so different between products and brands? ... I came up with these examples:

Marks & Spencers:
When it comes to food, I like to go shopping there, because they have semi-cooked food which is so fresh and high quality, and I love the way they show the expiry date, and they have something also (Best Before xxxx), it gives me good knowledge when to eat this product.
Spring:
I really love this brand so much, when I go to their shop I know that I can find all what I need, sport shoes? flip flops? high heals? .. whatever I'm looking for defiantly I will find it, specially the cute bags, and their prices are really really good comparing to their quality and their rivals, when I go to Al Ain Mall, sometimes I find a shoes with 250 AED in one shop, and almost the same shoes in spring with 120-190 AED, it makes me easily see the difference! also they have a nice employees.