I went to that page and I am 100% certain that page is a spoof. Perhaps you are humor impaired?==
OK. I didn't buy nothing from them so I couldn't sure:).
After a little research, it appears that the 0.1 uCi lump of Polonium 210 that they are selling weighs 0.00000000002 grams (http://www.signal94.blogspot.com) and would give off as much alpha particles as the paint on the dials of an old watch. A lethal amount of Polonium is 0.12 millionths of a gram and all you get for $69 is 0.00002 grams, so your approximate cost to kill someone would be $414,000 plus a phone call or personal visit from the NRC.