Maximum number of video avatar that can be created in Heygen

Hello, I'm wondering about the maximum number of video avatars (paid add-ons) that I can create in Heygen.

I work as a video creator at a hospital and want to make videos featuring many doctors.

I checked that it costs $29/month for each additional custom video avatar.

Does that mean I have to pay $29/month per avatar? For example, if I add 10 more avatars, would the cost be $290/month?