The value which can be placed on deposit free spins is dependant on how much you have deposited. Usually casinos offer a higher number of free spins for greater deposit amounts.
Deposit free spins can be quite valuable. In the instance where there is no wagering requirement attached to your free spins you will be allowed to withdraw all funds won during the free spin mode. The value of the free spins will of course depend on how much you have won. In a broader context the value of deposit free spins is determined by what exactly you get out of it. As a new player, utilising free spins will be extremely valuable when you are learning the ropes at the casino. You will be able to develop your strategy and learn how to operate the slots without wagering any of your own funds. In this sense deposit free spins are actually one of the most valuable rewards you can receive at an online casino.