This vintage store is right next to the Pompidou, a wonderful place for a collection of vintage…read morestores around the area. This area seems to have really good shopping boutiques, and nice places to stop and grab a bite.
Your perception of this place depends on how much you usually pay for "vintage". Generally I'm a true cost vintage buyer (the first person to purchase at a low price), and the amount they're asking for single pieces here annoys me. €80 for used 2000's Levi's is a little off point.
Buyers in the area generally get all of their vintage in bulk, and then sell it to the public at an insane high markup. If you check out any vintage store in Paris you'll see duplicates of the same thing in every store. I've seen this done in Florence, Rome, Paris, Greece... you get the point.
If you're seeking cheap Vintage that's all the same- check out "Free P Star" the newest version of Mad vintage in Paris.