Best mass send option for hundreds of wallets and how much are network fees?

Are the network fees the same on mass transfers. For example, if I wanted to send .001 SOL to 100 wallets, what would the estimated cost be?

And with that said, does anyone know a reliable mass sender that isn’t insanely expensive? I would prefer to avoid having someone make one for me if there is a solution available.

Thanks in advance for any help.