It can definitely be repaired, it would need extensive spackling, most likely with 2 part Bondo, then sended primed and painted.
this is something that should not take more than 6-8 hours in total, ob ... read more
It depends on the brand of windows.
Fiberglass, Aluminum or vinyl clad wood windows usually start around 600-700$ per each
vinyl windows start at 350-500$ each