I don't think mainstay sellers are losing due to thread. Taobao is a hassle to figure out and most sellers don't take paypal and use alipay instead. My hope is this thread helps people in the process of figuring out taobao. The savings are there by using taobao. You'll save money no matter what, even if just $10 or so. The trick is finding ways to maximize that. I don't think combined shipping in ebay really compares, since not every seller does that while on taobao all your purchases from any sellers can be combined. That would change my estimates quite a bit. I've got 4lb and 2lb on bbts for omeaga A and B. Have to see once he's released.