I know about the psychology behind prices that end in 9 or 99, but I'm starting to notice that some prices contain the same digit (not 9) repeated two, three or even four times.
For example, in this week's leaflet a popular German supermarket is advertising tangerines for €1.11, plum tomatoes for €0.88 and onions for €0.66, but nearly all their other prices end with a 9. I remember seeing this pattern also in other circumstances, like a restaurant offering sandwiches for €7.77, and in phone rates.
What is the point of having prices like that? Do they make the product more interesting in any way?