A good photographer doesn't have to cost a fortune, but paying out large amounts of money doesn't guarantee a good one. Get recommendations, talk to them, and decide if they are the person you want to take the photographs. Our photographer was brilliant, recommended by our wedding planner and the work he and his wife did on the day was fantastic, and his fee was very reasonable, because he doesn't do it for a living, but because he enjoyed it.
Speak to people at the venue if they do a lot of weddings, see who they recommend and take it from there.
Speak to people at the venue if they do a lot of weddings, see who they recommend and take it from there.