I made a purchase once in December 2023 and I just bought it again after 2 months of experience. I use SpaceSerp’s API to integrate into Google Sheet via Appscript and fetch data according to my rules. Here are some reviews:

1. Speed: Quite okay, usually takes 1 minute/query. I often use Google Sheet’s schedule to call the API every 5 minutes. The number of keywords processed is about 100 keys/hour. There may be many people who have better methods to increase the number of multiple call APIs to speed up processing.
2. Success Rate: Achieves 70 - 80% of API calls. However, this is not a big issue for me, I see that SpaceSerp’s report does not count the crawl if the crawl is unsuccessful, Google Sheet will repeat those queries.
3. Location: I usually call the API to research keywords in Vietnam and receive quite good data about autocomplete and related keywords.
4. Support: I usually ask for support through the Chat channel, the support speed is quite fast.
I hope that with some information and my experience, it can help you understand more about this deal.