Is it illegal to sell tickets over face value on craigslist?

I see posts on craigslist for concert tickets that are going for 50 dollars each. The original price (including service charges) seems to be 42 dollars each when I tried to get them online. Is this not illegal? I am in Virginia and can’t find laws on Google.

The concert is not sold out, just looking to see if I can get better seats (it’s GA).