[Johnny B.]

Rossi has said the “fuel” was doped with Ni-62 and Ni-64, neither difficult to obtain

Do you have any sources for this? I have been unable to find any actual pricing information for enriched isotopes of Nickel and Copper, other than a single comment that enriched Nickel in the 10+ grams needed for an E-Cat device would cost hundreds-of-thousands of dollars.

[count-your-change]

Give me a few. I’ll check again.

[count-your-change]

Here is a supplier of nickel isotopes but like many companies they publish prices online:
ISOFLEX Stable Isotopes | isoflex.com
www.isoflex.com/isotopes

and if you google “e-cat reactor Ni-62, Ni-64” it will take you to “Next Big Future” page.

Not much but it’s a start. More in a few minutes.

[count-your-change]

I’m not finding actual costs but since these are stable and not exceedingly rare isotopes the cost of a milligram or two might not be prohibitive. After all, how many samples of “spent fuel” have been provided?