Well, yeah, Flex is expensive, and powerful... just checked Amazon.de and it was 375 Euros.
Not sure why you say "only" 600 Watts. Looked at PC label, and at 120V, 4.5 Amps, that's < 600W.
Since you're on 60 Hz, you could get a *quality* voltage step-down converter, a plug adaptor, and use an...