Here is a detailed write-up covering what it is, how it works, pros/cons, and tips. Mercatino Juza (Juza’s Market) is the classifieds forum on JuzaPhoto , one of Italy’s largest and most respected photography websites. It allows members to buy, sell, or exchange used photographic equipment (cameras, lenses, flashes, tripods, bags, etc.) directly with each other — no intermediary like eBay or a store.
It seems you are asking for a (explanation, review, or walkthrough) of "Mercatino Juza" — most likely referring to the buy/sell/trade section of the popular Italian photography community JuzaPhoto . mercatino juza