Not to beat this to death, but l have been watching the price of new machines over the years, and there has been significant increase in the price of manual mills and lathes over the last couple of years. Salaries have increased, but so has cost of living, so disposable income has probably gone down. Tariffs have already been effect for many machines for quite a few years, but it is throwing the dice to say what is next. As others have mentioned, buying now is probably wise, I have yet to see anything go down in price for new machinery. I would be hard pressed to buy machinery these days and spend 2X what I spent on them 6 years ago, in my view Taiwanese machines offer more value/quality, but I gag at the current costs of machinery these days. Materials, will go up as well as everything else, but I doubt it will effect buying habits. There will also be loopholes to any tariffs, but at the end of the day I have little doubt that it will bring back jobs to the US.
Interestingly I recently visited Japan on vacation, I could find nothing that had a made in China sticker, not that there economy is in great shape but they have limited imports, and cost of goods/foods where less than the US when we where there.