Personally, I'm not a fan of making threats. With eBay, you request your refund and see what happens. The best thing you can do is point out that it would save the hassle of going through returning and whatnot, since there is the return policy. But really, once you agree to buy something, that is on you.
But I can't say I know what exactly happened, and I'm happy things worked out in the end.
If you want something faster, try buying from 88powerpig88 or 2011sizemore. They're US sellers, it's just the prices will be higher.
Otherwise, leosama's thread is the best route. But the US seller prices are usually only about $10 or so higher, last I looked. (Not always, but at least for the single Beyblades.)
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