My dad bought some these speakers for $100, wants to know if he should keep or try to sell.

My dad got the Weylan Cutler HDSTFO - PS420 5.1 Home Theater System and wants to know if they are any good, or if he should try selling them. I have only found one things saying anything about it and that they are trash, I was wanting to try to get some more opinions on it before I told him anything.