You can find a lot of obscure Swiss brands out there... and try looking for purchases overseas.
For example, I have a Revue Thommen Pro Diver. I'd gotten this off WUS for around SGD500. But in SG, it's sold at the boutiques for SGD2,500, before discount. The cheapest I've known anyone get it was at SGD1,800.
BUT
This same watch is available on Amazon UK for £400+!! And the version with just a leather strap and in a plain slim case is just £200+!! Guys, it's the same watch!!!
So look out for good deals.