That depends on a wide variety of factors, to include the size and make of the violin, the type and quality of the wood that was used, etc if its ugly then it's cheap and it will cost 1.00
It depends, as you can buy the individual strings, all of the strings or have the place where you rented or bought the violin restring the violin for you. Also, depending on the string maker and...
The violin I am using now was $2,000 when I bought it five years ago and was bought to get me through high school. The cheapest violin I've ever bought was $100. It was my first violin so its tone...