Paul, I don't know the price of the KW 750 used. I mentioned the prices of two items: The ASR Emitter, which is not the exclusive version and came some time before the exclusive as well. I'd guess around 2003 or so. I also mentioned the price of the Utopias. I said these prices were quite reasonable for this country. I mention the KW also because as you noted before, the MF gear matches well with my speakers and if I couldn't find a decent replacement for the Tri-Vista, something like that might be an option. In fact, I don't plan to buy the KW 750. If I am going to replace the Tri-Vista (which is my plan), it will very likely be another brand.
I can't find an Accuphase amp anywhere in any of the shops I've passed by. While Japan might be very close to Korea, that doesn't mean that all high end audio from Japan makes it here readily. Keep in mind also that Japan and Korea do not have the best relations historically. Marantz has a strong presence, but I prefer their digital players over their amps. I appreciate your enthusiasm for Accuphase, but I'll let my own ears be the judge here if it's possible for them to be. I completely agree with you on the build quality of the Tri-Vista. The build comes far short of the sound quality sorry to say.
These Utopia speakers (the ones between the Grande and Mezzo) are in excellent shape from what I could see. I've very much enjoyed the Altos, but I'm going to consider the possibility of a change if I like them as much as the last time I heard them. But they'll also have to accommodate my music as well. It will also depend on whether the seller will give me a good price on the trade and of course be willing to trade.
Actually, the local brands in Korea are April Music, Emille, and Tone Audio. I like all of them quite well, but I think they're overpriced here. The prices are rather like those of the imported gear, but that's because in this country price is always associated with quality even if the prices could be lower. April Music produces good, mid to hi-fi gear at lower power. Emille and Tone produce tube amps. At a recent show and using the B&W 802Ds, I thought the Emilles sounded very nice but a bit polite. The Tone Audio 90 watt tube integrated did quite well on the B&W 800D speakers but not as well as their more pricey separates. The integrated was getting a good workout and held out pretty well considering the heavy demands of the speakers being driven.