Not sure if i am posting in the right place but i will try anyway. I got a friend of mine that has 2 memphis power performance subs and a memphis 16-st250d amp. 1 of the subs has a broken surround. he got them with the car that he just bought and doesn't want them. I hav tried looking on the net can't find anything like that. any one know what they are worth? all he wants is a head unit with a mp3 player in it. any help is great.