http://www.elementsales.com/pl_element.htm Ever wanted to buy your very own five-gram ingot of lutetium? Neither have I! But apparently you can!
This site seems to sell pure samples of every stable element except fluorine (which is sold as a fluoride salt). It's quite an interesting thing!
And quite an expensive thing.
@Felthry If I'd buy anything from here, it'd be Bismuth, but even that's kinda pricey I'm guessing.
I really want to make my own Bismuth crystals, is why. :-)
seriously, quite expensive. They offer a 29 gram sample of copper for $19. This much copper is worth about $0.26 according to Wolfram Alpha's database. Even accounting for making it into a nice little rod like that, that's ridiculously overpriced.