what was the local currency in sicily in 1669, looking for price of newspaper?

Answer 1

Gold ducats and silver tari, but a tari was about 4.6 grams of silver, a bit too much for a newspaper. Are you sure they had newspapers in Sicily then? They were only just beginning, and Sicily was a backward part of Europe.

Answer 2

There could have been newspapers in Sicily in 1669 perhaps not pub;lished regularly but only from time to time. As it was likely to have a political slant it would have been free.
The first PRINTED newspaper then that is Johann Carolus's Strasbourg newspaper "Relation aller fürnemmen und gedenckwürdigen Historien" (Collection of all distiguished and commemorateable news) first published in 1605.
BUT if we allow handwritten newspapers using the same format, the date is pushed back to at least the mid-16th century in Venice.
"Newspapers published under the same name on a regular schedule first appeared in Venice, Italy, in the 16th century. Handwritten newspapers called avisi, or gazettes, appeared weekly as early as 1566. They reported news brought to Venice by traders, such as accounts of wars and politics in other parts of Italy and Europe. Venetian gazettes established a style of journalism that most early printed newspapers followed—short sets of news items written under the name of the city they came from and the date on which they were sent. The oldest surviving copies of European newspapers are of two weeklies published in German in 1609—one in Strassburg (now Strasbourg, France) by Johann Carolus, the other in Wolfenbüttel, Germany, by Lucas Schulte."
Of these Venetian papers, the earliest I can find a record of was the Notizie scritte, a monthly newspaper first published by the Venetian govenment in 1556. Readers paid a “gazetta”, or small coin, for it. Hence the name "gazette" for such publications (and found in English newspaper names to this day).