

I suspect this is highly dependent on the level of enrichment of said uranium.
Even buying it piecemeal in dinkum quantities from scientific suppliers as a private customer, I’m seeing depleted uranium — i.e., 99.9% U238 and not realistically fissile material — priced at $32.50 per gram online. 2 kilos of that would thus be $65,000. Although I’ll be damned if I know just what the hell you’d do with the stuff.
I reckon weapons grade would run you just a smidgen more than that.









You separate out the isotopes. You don’t create U-235, but rather you extract the fissile isotope from your sample. There’s only a limited amount of the stuff in the world and the majority of uranium still buried (and in fact, the majority of it at all) is non-fissile U-238. Only something like 0.7% of the uranium in the world is U-235.
https://en.wikipedia.org/wiki/Enriched_uranium