Coelrind (buy Superconductors) - Ross 490 (buy Perf Enhancers)
About 48K for the round trip in the Hauler with 22T. It'll cost a bit (130KCr IIRC) to buy the stock.
Uraninite(?) sometimes comes up on the BB at Coelrind. This can be gotten one hop away at DT Virginis.
No Kharma, you can't buy virgins there.