Would you sell for cash?

I just got an offer for my amp from a buyer on US Audio Mart and he wants to pay cash. He lives five hours away but has an employee in my town, which is a suburb of a larger metro area. He offered to have his employee pick up the amp and pay cash. The buyer has been on US Audio Mart for 8 months and has no feedback, which is not unusual. 

I guess the cash part makes me uncomfortable but maybe this is not so uncommon? So wondering if many accept cash with local pickups and has anyone had a problem.  Seems like PayPal or Venmo would be preferable. I guess I can see someone with a business drawing petty cash out for personal use. Just not sure about the whole story. Thoughts?