These things are not a science, it is more of an art form. I have been buying at .00001 and selling at .000011 for a while now, but every time it’s unique. Just yesterday someone dumped 1 BTC at .000009 on Bter. The daily NSR volume globally is usually just a few BTC, which translates to a few 100,000 NSR or so.
You can buy 0.45 BTC of NSR below .000011 on polo right now. If you’re looking for higher volumes for cheaper, you’re going to have to get lucky. I’ve just found that the chance of getting lucky is vastly higher on Bter than on Polo, but the response time of Polo is better. We’re talking days here to get lucky on Bter, so if you’re trying to get your NSR before friday, well guess what: so is everyone else.