Depending on the size load you are looking at importing, it might be worth getting yourself a sourcing agent in the Chinese market.
No where in the world is producing cheaper clothes at the moment, but if you do choose the Chinese avenue, make sure you know what the clothes are made of.
Apart from that I would have suggested liquidations, but if you have covered that avenue then that leave me clueless. Of course it is always worth keeping a good eye on liquidators as they do get shipments when available.
Have you asked jimmy, maybe he could source something through PPWDG for you.