Each individual spin is valued at 0.10 per spin. However, this is just the starting value. The true value of the free spins will depend on the amount won during your free spins!
Starburst free spins allows players to spin the reels without wagering any of their own funds. When you spin the reels the wager will be 0.10 per spin ( not taken from your own account). The amount that is won during free spins is the real value of the free spins and will all depend on how lucky you are on the day!
In a broader context the value of free spins can also be equated in non monetary terms. As a new player, when starting off on the slots, you may be unfamiliar with the particular mechanisms and gameplay. The free spins awarded to you upon signing up will allow you to get a grasp on the fundamentals of the Starburst slot and set you up for success in the future. The value of this is of course non monetary, but highly beneficial in the long run. You will be able to practice without risking any of your own funds which is a huge plus!
In total you can get more than 100 No Deposit spins. Find Starburst no deposit spins here.