I mean think about what you need for an espresso machine. Precision machining, durable/expensive parts, a really strong boiler, it’s generally quite hard to get that under $100. I will say with a LOT of work you can get amazing results with something like a picopresso or nanopresso
Just my personal experience btw with these espresso (style) machines under $100. Don’t even bother with the cheap stuff that has a boiler they just skimp on everything so the coffee is so much worse