Question: Is there a domain price checker that offers a free basic version with API access and premium rating tools?

If you're looking for a domain price checker with a free basic version and API access, Domain Price Checker is a great choice. The tool, which uses data from more than 2.6 million domain sales and machine learning algorithms to estimate domain name values, offers a Basic plan for free with 15 queries per month, and API access is included with all its plans, including the free tier. The tool also offers detailed domain reports and premium rating tools, so it's a good all-around option for domain valuation.

Another free option worth considering is HumbleWorth, which uses AI models and big data analysis to provide you with domain valuations. It offers unlimited bulk assessments, with domains categorized into keep, drop and sell groups, and it offers a range of estimates with probabilities. It doesn't have a specific basic plan with API access, but its free and unlimited usage makes it a good option for domain investors who want to evaluate lots of domains.

If you want a premium rating tool with a one-time fee, One Word Domains offers lifetime membership for $149. It indexes 27,625 English words across 93 TLDs and offers minute-by-minute updates on availability and prices. This service is good for startup founders and entrepreneurs who want memorable and brandable one-word domain names.