Argus is a name from Greek mythology, but that's about it.
Just googled it for more online use options - ok, well, some cybersecurity companies and some newspapers used it in their name.
For me it's a ''can be used name'', but nothing to write home about.
With that being said, there are also several trademarks on the word ''argus'' (I assume they are precisely in security and finances sectors).
If you have an offer of 3,5k for this name I would sell it faster than your client finishes typing it...
Same goes for ''targo''.