I've spent countless hours browsing various miniature stores and their collections of miniatures lines, and have collected nice collection of prepainted miniatures for various genres. I've started to create articles of these collected miniatures; My series for Sword & Sorcery is now complete (for now), but what I really wanted to bring out here is the post about getting a cheap base collection for modern/cyberpunk games. For this, we can thank collectible miniatures lines with very rare miniatures and singles stores!
Ps. I've linked all the miniatures to one singles store, from which I've bought most of the minis. Links allow you to gather a collection easily from there as well as getting additional photos (and information) about those minis - if you want to use another store just go ahead!