Recommendations for Pay-As-You-Go SEO Tools

Hi everyone, Do you have any recommendations for SEO tools that offer pay-as-you-go pricing (based on usage only)? We currently pay about $700/year for our SEO platform, but we don’t use it enough to justify the cost. I’m looking for alternatives where we only pay for what we use. If we can’t find a good option, I’m considering building something in-house using a reliable SEO API. Based on my estimates, our usage would likely come out to around $50/year. Thanks in advance.