There are definitely alternatives. For example, https://hcaptcha.com/ (I have not used or evaluated them).
If any of your small business clients might be interested in our new CAPTCHA service that should launch late next month, please let me know (see profile for contact information). Our pricing is projected to be $10 for 100,000 requests.
If any of your small business clients might be interested in our new CAPTCHA service that should launch late next month, please let me know (see profile for contact information). Our pricing is projected to be $10 for 100,000 requests.