In the streets just below Sacré Coeur are many fabric merchants.
Some, like this one, have plentiful displays on the sidewalk, tempting buyers.

I wondered how the fabrics were kept clean from the grime of the street, but do you think that the inventory changes so often that the "freshness" of the fabrics is not an issue?

Ronsard Decors
7, place Saint Pierre
75018, Paris