HV Maida PCB or kit?

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Does anyone know of a decent quality Maida bare PCB or kit (assembled or not) regulator? Need 450V@250mA out.

The only thing I can find on eBay is a fully built one with a single BJT as pass element. I'd like at least a Darlington pair there and I prefer not to have to butcher/redesign/rebuild the board if I buy it as a finished product.
 
No, thanks, I'm looking for just the opposite. I can design my own just fine, but I don't want to go through the trouble of making PCBs for just a couple amps.

I prefer to buy available PCBs even if they're not the greatest design, as long as they're a decent design and maybe I can mod them slightly.
 
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