Shoulder arthroplasty is also less expensive, according to McFarland. A shoulder replacement’s total costs, on average, are $10, 351; whereas hip replacement surgery averages $15, 442, and knee arthroplasty, $14, 674.houlder arthroplasty is also less expensive, according to McFarland. A shoulder replacement’s total costs, on average, are $10, 351; whereas hip replacement surgery averages $15, 442, and knee arthroplasty, $14, 674.