Power Supplie's

I'm just looking for some confirmation on my power supply numbers.

Four steppers rated at 4.5v/phase and 3.2A [all bi-polar series]. I plan to use Gecko 202's. Therefore 4.5v*20=90VDC, we know that the Gecko's only take up to 80VDC so thats my upper limit for my voltage. The ampers side of things 3.2*4=12.8 @70% duty per Gecko's doc's =8.96a or call it 9A. Does this all look correct?

Does anyone know where I could find such a beast off the shelf? Or a place [ preferably in Canada] where I could purchase the components off the self to make it. Links to websites that explain building power supplies in English [ vs electronic-ese]?? Ball park guess's as to what this should cost ready made? I got one quote back with a total of nearly $1000USD with shipping.. however I was a bit off on my first set of numbers provided to them so that might have an effect.. Does this sound even in the ball park? I had $100ish in my head when I asked for the quote but then.. I have no idea so..

Thanks
Jarrett Johnson


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