Warning: China-Hifi-Audio.com

Having ordered from China before (Not Audio), I am astounded that the $595 shipping charge did not seem excessive or bogus.

~~~ Not true at all. Shipping fro china fees has sky rocketed, and dealers are not making a  profit,,maybe some are discounting the unit, but addinga  few $'s to ship fees = break even. 
Pay less on amp = pay a bit more on shipping.
Infaltion has bumbed ship fees lately. 
DHL wants their money

Another Chinese scenario: Typically, shipping from China is dirt cheap on many items because the Chinese government provides free or next to free shipping for their exports

On items weighta  few onzes, shipping is free/cheap like $1
But on amps weighing 50lbs++++,. shipping goes DHL, and these fees have jumped, = Inflation.

But my guess is the original owner backed off RE-selling the amp to chinahifi.
so chinahifi was caught in themiddle
this is my hunch.

@mozartfan -- there’s a bridge in Brooklyn that I want to sell to you. Please PM me asap. I only take cash by the way. Once I receive the cash, I can send you pictures and other non-essential details like the condition of the bridge, not that it matters when buying bridges.

Why don't you just buy from a Local Dealer. Line Magnetic Stuff is shipped from China and many of the items are old discontinued or back of the factory products that have not passed quality control properly and are not fit for export. 

Update from my my last post. Yong Lee from China HI-Fi did reach out to me on 5/6/21 to inform me that R8 amp would ship out between 5/10 and 5/20. Apologized for not replying sooner.
Amp shipped on 5/18 and received UPS Worldwide Expedited tracking number. I received amp on 5/25/2021. UPS delayed delivery by one day. I received amp double boxed and well protected. No damages, I set up amp, I used my own tubes and not the Wellsington tubes. I’ve been playing the amp for the last 4 days and it sounds great. Overall, my experience was positive and would purchase from China Hi-Fi again.