I think I can safely say that this is the first “commercial” I’ve ever seen for fossilized Megalodon teeth. Teeth of Megalodon (Dente de Megalodon) looks to be an online store dedicated specifically to the sale of Megalodon teeth found off of Belep, New Caledonia. While the site does seem to have a fairly wide selection of the fossilized teeth, the condition of most of them appears to be more on the “worse for the wear” side of things.