For example, you could make a Leagues of Votann army out of the Wargames Atlantic’s space dwarves, the Einherjar. It can still be inexpensive wargaming on a budget (again, so long as it’s not a tournament where you’re constrained by proxies). When it comes to sci-fi, and the biggest game on the block, there’s no reason why Warhammer 40k should have to cost a lot. On the other hand, you could do Reign in Hell and use the latest Slaves to Darkness models and pay through the nose.
Or you could play the aforementioned Reign in Hell and play it very cheaply–you could literally use the cheap D&D models and get your whole tabletop for fifty dollars. Then, instead, try Silver Bayonet, which is also Napoleonic, but skirmish level. Sludge War is great because you can get Napoleonic miniatures almost anywhere, like these ones from Warlord Games or these from the Perrys–but Sludge War does require a large number of miniatures. I am a strong advocate for indie games, and there have been some I’ve reviewed on this website which can be played for very little money. So let’s take a look, first, at some less expensive games.