Without trying to be gate-keepy about espresso, $100 is really too cheap. Since you just have a blade grinder, you’d have to get your coffee ground at the store/coffee shop. That makes it difficult to get the pressure/flow rate right without a pressurized basket.
If I were you, I’d stick to trying to make “espresso-style” drinks (especially if you want milk drinks) with your aeropress, or maybe getting a cheap mokapot, and if you want to spend some money to improve your coffee, spend it on a burr grinder.
If you are set on trying to get up and running with “true” espresso, look for used manual lever machines like a Flair or a Rok, and get coffee ground at the store, and get a pressurized basket.
Oregon trail, yes, Oregon city, no. I remember learning that it went from independence Missouri to the Willamette Valley. If I had to guess where I thought it ended, I would have said Portland.