My wife and I bought one on Amazon for like $250, it was a step up from the one she used in her college labs. We also spent the extra $100 for a USB camera that it's into the eyepiece of the microscope so you can see what you are looking at on a computer monitor and record it. Super fun!!!

Swift SW380B 40X-2500X Magnification, Siedentopf Head, Research-Grade Binocular Compound Lab Microscope with Wide-Field 10X and 25X Eyepieces, Mechanical Stage, Abbe Condenser, Ultra-Precise Focusing https://www.amazon.com/dp/B07N7VDJ15/ref=cm_sw_r_cp_api_i_9eJzFbQSZYMYE