Jason,
instead of paying $320 for an isolated probe, you can buy with around $500
a Hantek 200MHz dual channel isolated inputs scope, with probes.

http://www.hantek.com/en/ProductDetail_1_18.html
This scope is quite good, I own one, except perhaps the way you must
navigate in the menus.

If you need just a 1000V- 5000V probe or so, this is a different story..

Vasile

On Sun, Aug 9, 2015 at 2:49 AM, Jason White <
whitewaterssoftwareinfo@gmail.com> wrote:

> What is the cheapest isolated oscilloscope probe available? Low
> bandwidth is fine.
>
>
> Cheapest I have found is the BK Precision PR-60 for around $320 USD.
>
>
> If nothing sub $160 exist I could envision myself using a $30.00
> passive high voltage probe in conjunction with a properly biased
> optocoupler.
>
> --
> Jason White
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