I am glad that you were able to spend time writing about the problem upon which you want advice "Very long story kinda short as I am heading out of the house right now.".
I am assuming that what you mean is that the lining was becoming unstitched, "and behold the jacket is separating from the outside of the suit" ? It does not look good but will probably be fine functionally. Take the $50, it is probably the best that you will get on a sale item.