For me, it's 35 for a normal trim on all four. It's 75 for front shoes, and 120 for shoes all around. Those, however, are prices for normal shoes.
One of my horses wears $200 shoes every six weeks. She has pour in pads on the front, and the farrier spends a lot of time with her to make sure everything is balanced and she won't interfere.
My other horse is about to get a pair of shoes costing between 300 and 500. She has a massive white line infection and laminitis. I'm in at least 200 on materials alone, depending on what option I choose for her.
My farrier is awesome, so I am willing to pay the price. If your horse has problems, expect to pay.
Also, my farrier does not charge extra is the horse is a jerk about having feet done.