Balcony canopies-tende da sole- Liguria

That sounds about right if the quality's good (rugged fabric, heavy duty mechanism).  We got one upstairs, one downstairs (each 6 meters wide) for about that amount.  They have a manual crank and extend outward about 3 meters 

 dont know them... but they advertise via google on a ite i use for other building works http://www.primrose-italia.eu/tende-sole-prezzi-scontati-c-452_1135.html?source=googleads&gclid=CO2fn_Wc-JsCFRAgZwod4TQw_Qthats their special discounts ...but if you look on the side they have other types and obvioulsy other prices 

We have just taken posession of our newly purchased groundfloor appartamento and it has a fantastic electric canopy which extends over the kitchen patio doors and continues over the window of the room next door.  I had not appreciated the cost our vendor must have paid for it.  I have one question though - it is attached to the underside of the long balcony of our neighbour above.  Presumably our vendor had permission from the neighbour to fix it there - what are the legal implications if it causes damage to their balcony?  I expect we will be responsible even though it was not us who ordered/carried out the work in the first place.

Thank you for your replies. Just a thought, are tende da sole the full responsibility of each apartment owner or does the condominium have some responsibility? For example, when we had to replace the tiles on the terrace (we are on the top floor and it was leaking ) and balconies, the condominium paid for part of it and we paid the rest.