You can try Global Easy Buy on ebay. I've ordered a set for myself, and looks like it would ship in a week or so. However, keep in mind that GEB is a hit or miss affair. I've tried a few times on previous occasions, and they just cancelled the order because they weren't getting a good margin on it. So, if you are lucky, you might just be able to get one. I bought it for 6.5k on GEB, and if I get it without any glitches, it would be a pretty good deal. Of course, an isolation transformer which can supply 250W power would cost another 1.5k or so.
For example,
Global Easy Buy
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