REWARD SHARP EYES

EIFFEL TOWER KEY CHAINS

"Touristy" places sell them for almost nothing...

On rue de Rivoli

At a bookseller's stall on the Seine

At the exit of the Odéon métro

...the souvenir shop under the Louvre adds a decoration

and multiplies the price by 12...

Letting the kids choose among the bunches 

that young Senegalese sell
in front of the museum and at many touristic sites

slightly boosts their meager revenues.

In any case...

 Brandishing them at Palais-Royal, across the street from the Louvre.

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Next,

Save the blockbusters for last