It was worth the cost as it was quite a quick glimpse of Florence's cultural scene. our guide Ellena was very knowledgeable and peppered her talk with a little humour about Florence.
However locating her at the Meeting Spot, was very difficult, had to make calls to Airtours 3 times to confirm where & who was running our tour, as there were at least 20 tour groups all assembled together. It was total chaos with so many language speakers - suggestion that the tour guides at least carry a flag of their company name or wear a T-shirt for easy identification. An sms/email of your guide's name & location for every group departure I believe would be a good idea.