At this moment, 1 gram of radioactive Nickel-63 costs around 4,000 USD. Nickel-63 isotope does not occur in nature, it is obtained by irradiating Nickel-62 inside a nuclear reactor.
No worries. Glow it up, let's get some extreme energy density up in this bitch. I went for nuke in the old days where I enlisted in the military.
I have a healthy respect for radiation. That's why I leave handling the good stuff to the professionals.
I've actually got some small isotope samples in a lockbox from an old highschool demonstration lab for Geiger counters. No Geiger counter though yet. I haven't even opened it since I got it to check the contents were intact.