Hondos Center, Athens
Hondos centers are all around Athens. They are sort of like pharmacies/clothing/luggage/cosmetic stores. They have almost everything. They are cheap too, so if you are looking for something that falls under the categories I mentioned, you are sure to find it at a decent price.
What to buy: anything
What to pay: Depends on what you buy, but I would say Hondos Centers are generally low priced.