my SH 101 cost £150.
at the time, that felt about right : it's a very simple, but hugely usable synth. Would I pay £1000 or whatever they are now s/h ? would I hell. Same as I was never going to pay £2500 for a 909.
I don't think at £339 this is overpriced at all : like Daren says ,when you've actually got the thing in a mix ( or are blasting it
out at a gig ) no-one is going to be able to tell the difference. And it's polyphonic. And has patch memories. And sequencer memories. Despite the small size, I was extremely impressed by the build quality of the TR09 - hell, I bet the SH-01A will actually feel built than my OG SH, with it's plastic case & sliders you can bend if you push hard left or right.
We're in a lucky place right now. I was fortunate enough to grab one of the few remaining Korg MS20-M kits : it's superb, much better than the scuffed up old MS-20 I sold for £200 15 years ago. And yes, the £800 I spent on that ( pre-built, with SQ-1 sequencer ) felt like value for money. More much value for money than buying another old scuffed-up MS20 at twice that cost.