There are three stores in Berlin that sell clothes from different eras.
Among them are "Made in Berlin" and "Mint World Court" (Maddy's) with different discounts for different types of goods:
It's one big village with many shopping stalls all over the world! Here you can find things of various styles - coats from the 1920s-1990s.
In addition to the typical big names, including Berlin designers, there are offices throughout Germany. A world of antique shops and shopping malls with unique pieces for women and men, Susan's Loretta offers a wide selection of clothing from all over the world, from Prague to Bangkok (Barcelona). Humana has over 15 lots on five floors; this is a big vintage boutique with many branches inside! Also here you can find handmade clothes for 1 euro without trying on.
There is a flea market in Berlin where you can buy things from different countries. Tumblr writes about this with a link to the Framstraez (FRAMTAE) store website. Here are great deals and a good selection of things for vintage lovers! Panniersta'es is a store with live music next to the MegaFon cafe or restaurant.
Here they sell clothes at a very low price: