It's been awhile since I have found any Isotope Cores to speak of. On my last trip to TN I did find a few. Current up for sale are 4 Boxes of Cores. Each Box has 2 Cores + 2 Redneckgold Ingots made from a Cores for a total weight of 68 pounds. They will be shipped USPS Med Flat rate with Tracking #s . There is not enough Cores to melt into Ingots, So at this time whole Cores only. Paypal JRYounts@redneckgold.net Use that email for any questions or if you want to be on the wait list. Thanks Rob