Sure, but you don't need to worry about conversion cost there.
I was faced with keyword combinations that had "natural" costs that were very low (and appropriately so, since I was the only person "bidding" on them). But then a few days later, "low quality score" and they ratcheted up the price 10x.
If you get a job out of it, the penalty doesn't really matter ... I was trying to convert $5/mo IaaS customers.
Alec Brownstein did exactly that by ad targeting his favorite creative directors' names some years back in order to land a job. It worked.
https://mashable.com/2010/05/13/job-google-ad-words/#GvW9atl...