KV bulk write pricing

Using the Rest API to do bulk KV writes, I am curious if the billing for those are 1bulk push = 1 write cost or if every key in the bulk push is charged for separately.

So, if I push 100 KV pairs in a single bulk upload, will I be charged for 100 writes or 1?

Each key in the bulk request is billled as if they were each individually written, so 100 writes.