I've only recently started down the path to minis for Dungeons & Dragons, and I still don't use them in all of my games. I started with some of the pawn sets put out by Paizo, which were of a higher quality than I had initially anticipated. Then, I started to fall down the rabbit hole even further, and I began to look at the many different mini options out there, including the prepainted minis from Pathfinder, along with Nolzur's Marvelous Miniatures. They were all relatively cheap, and I figured I could grab a few here and there and then eventually learn how to paint (still working on that last part).
I had also heard of a popular company called Hero Forge, which allows people to make custom minis for their game. I loved the idea, but it's a costly venture. I spent about $35 for a single mini (a birthday present of the half-orc fighter Pesci, my friend Erin's character in a game we play set in Tal'Dorei). Let's look at some photos of Pesci and images of some other minis for a comparison.