I often use just my iPhone and a 10x loupe in front of the camera. It's nothing fancy, but it gets the job done. Lighting honestly matters more than most other things.
Indeed! And along the same lines as Seattlite's post, certain old camera lenses can also be reversed, held in front of whatever camera or phone, and used to magnify. Point is there are many ways/tricks that can be used to improve images that done involve buying a new camera/setup or cost an arm and a leg.
I like Books response - a scope can actually make you thousands of $$ instead of being a jackass I found this CHR on my 2009 Lincoln cent thanks to TJ (who today was banned by our wonderful desertjem)