S3-backed CH merge trees are notoriously expensive due to the high API call rates. We have a table doing over 11M APi calls per day. What are you seeing?
- 1M GETs $0.36 (R2) vs $0.40 (S3)
- 1M PUTs $4.50 (R2) vs $5.00 (S3)
We were concerned with some of the performance benchmarks we've seen with R2 in the past (though they've probably have improved), not to mention our compute options become a bit more limited to bandwidth alliance clouds otherwise we'll be eating network egress fees (which I do hate with a HUGE passion).
Though I can imagine if you're comfortable with one of the bandwidth alliance clouds already and can take a bit of a perf hit for search, R2 and Backblaze both can provide some cost savings depending on your workload.