Elevenlabs is pretty affordable if you're not planning to use more than like 20-100 thousand characters in a month. The first month is discounted sometimes too if it's a one off thing.
As a general caution though, it can be a pain to find voice clips that are high quality, isolated from other voices, and capture enough variation to avoid monotone. It's not like, you know, actually hard, but you might spend more time than expected getting it to where you want.