Best option for securing 1000+ websites (SSL)

My company manages well over 1000 sites for various clients. Currently, we are paying for a Standard DV certificate for each individual site ($ 94.99 from GoDaddy). We are easily spending over $ 100k per year on SSL certificates alone.

I know there has to be a better option when securing this many websites. From GoDaddy, there is an option for using their ACME Server and automating it, is this feasible for the amount of sites I have? Should I be using a wildcard cert for our company to secure our client sites?