I see usher speakers from time to time come up for sale on audiogon used but ive only saw jungson speakers come up for sale once & that was on ebay from a guy in hong kong.
i was going to buy a pair of jungson monoblocks last year direct from the factory but the deal fell through due to the language barrier so i might still have jungsons contact info floating round here somewhere,i'll look around & if i still have it i will post it for you.