There are many stores and some of them do indeed have serious discounts.
So if you are interested to buy something new, try it - Londoner Bogen 10, D-66482 Zweibrucken.
We had problems in finding something decent to eat, because there are only few cafe-restaurants, but owned by the same company. We had an Italian sandwich who had nothing to do with Italy, but the prices are acceptable (less than EUR 4 the sandwich).
At the end of the week it is very crowded, so you have to be patient and to reserve all day for shopping there.