团长，要换可以吗？买二送二团长，还可以换吗？有买二送二的，我的鱼油买四瓶吧，买两瓶送两瓶：） 1. GNC Triple Strength Fish Oil + Vitamin D-3 60 softgels 885311 Price: $28.99 Member Price: $26.09 Qty：4瓶 （买二送二） http://www.gnc.com/product/index.jsp?productId=4190914 2. GNC Fish Oil 1000 360 Softgel Capsules Qty: 1瓶 Regular Price: $17.99 Sale Price: $14.99 Member Price: $12.74 http://www.gnc.com/product/index.jsp?productId=3943828&cp=3593185.12961314 3. GNC Calcium Plus 1000 with Magnesium & Vitamin D 180 Caplets Qty: 1瓶 Price: $12.99 Member Price: $10.39 http://www.gnc.com/product/index.jsp?productId=2779385&cp=3593185.12961320.13311981