The domain was previously owned by Innovation HQ (innovationhq.com) who own tens of thousands of domains, some of the best in the world (they sold robot.com not long ago, owns/runs whatismyip.com). Innovation were asking ~$5 million for it earlier this year. Given the huge money flowing into AI router projects, I expect Ramp paid very close to asking, or perhaps a little more. So, $5 million +/- $1 million is my guess. I assume Ramp will announce the price in a few weeks to generate some more press for the project.