Three star rating affects selling status?

Hi, I'm a new seller and had my first sell, which I thought was a good transaction. The first day, the buyer could not make it on time, so I suggested another day. This time the buyer made it even though he was a half hour late. He said he was coming from 30 minutes away but seemed very polite. He tried talking me down another $5 on the amount agreed to, and I had to refuse - I already reduced my price $30! He seemed happy with the product and I got paid, so I was polite and rated him 5 stars. Come to find out later, he only gave me 3 stars, and I did nothing wrong and was very friendly and polite with the buyer! Now I'm trying to sell something else and after over 200 views, not even one offer! What do you think? Could it be the unfair rating?