What KIND of microscope do you have? how did you get a megalodon tooth those are so expensive? and You have a pet tarantula???

glumshoe:

It’s an old compound microscope that my dad had owned since before I was born. He found the megalodon tooth at an antique store for fifteen USD when I was a kid. My rancho Petunia was inherited from a friend who moved to Japan last year and needed to rehome her.

Megalodon tooth price varies hugely depending on size and condition. If you find a perfect, six-inch, big-as-they-come tooth, that could fetch you a couple thousand bucks, especially at auction. If you want a comparatively small (but still very impressive) tooth and don’t mind some wear, more like $50, and a big range between. They’re a very popular fossil item, for their relatively common nature, the variation in size, shape, and color, the impressive serrations on the sides, the glossy sheen, and of course the “this is a palm-sized tooth from a prehistoric shark” thing. 

Or you can get lucky and get one for $15 at an antique shop somewhere.