Personally, I think 270 Euros for a Sam 440 Flex (the current price) is a good one
I agree that this price is acceptable, but the 667MHz "G2" CPU is *way* too weak and not worth it.
When the Pegasos 2 reached its EOL (7 years ago, time flies) its price was similar ($399 /~EUR €300), but with a 1GHz G4 that runs circles around that Sam. And most people consider the Peg2 to be a bit weak; the old G4 Mac's we use with MorphOS today is almost 2x the speed of the Peg2 G4, and this is where heavy web browsing and media playback
starts becoming enjoyable. I have no personal experience of the G5's, but the situation improves even more of course.
I would actually consider paying up to €500 for a new PPC motherboard for MorphOS even today (a bit more for a system of course), but then it would have to show some
improvement to what I already have, I'd expect
a step up instead of a step down. I would
at least expect it to play x.264 bitstreams in software/CPU in full HD (1080p) without any problems, and with the silence of a G4. Can it do that, then I'd be interested, even though €500 is a bit expensive, because then the performance would at least cover many of my non-professional everyday areas of use (casual Internet and media consumption), even if it's obviously still going to be severely under-powered compared to real 2013 desktop HW. If not, I'd rather stick with the much cheaper G4 Mac HW that at least plays most 720p bitstreams (not really interested in those hot and bulky G5's).
Those "G2" class CPU's struggle with DVD resolution MPEG-2 streams, and I see no reason to buy something like that at all in 2013, no matter the price. It wouldn't just be a step back, it would be
*several* steps back (or far more than a decade back in time, in performance comparison). In that class you can still get a $99/€75 Efika 5k2 brand new from Directron.com. It's a little slower than the Sam (400MHz instead of 667MHz), it has some oddities, quirks and limitations, and it's not as expandable, but at $99 the question is if it's not a better buy? I mean, those slow "G2's" aren't really useful anyway, so...