The problem is when you raise your prices to cover the tariffs and the customer decides they can no longer afford the job ( which will always happen at some point when price rise ). Maybe they have had to increase the prices for their business and arent selling as much, At that point then tariffs absolutely effect your business
If one sources from those that are affected by the tariffs, yes that would affect you. Now as I and others have mentioned, some use the tariffs as a means of increasing prices that aren't directly related to the tariffs, but they are using that as a scapegoat. Now, there are some that have seen an uptick in orders due to the tariffs and have increased price that way, so it's hard to tell at times which one that it is. That's just the business being dishonest though and unfortunately for the pro 100% free trade crowd with no restrictions at all, that will still happen. Easily manipulate supply and demand to make it happen. So while in theory free trade is mutually beneficial that goes under the supposition that everyone is going to hold hands and sing kumbaya. I don't think that's going to happen between countries that are only using trade as a matter of convenience, nothing more.
However, if the uptick in price was legitimately due to demand going up for sources that aren't getting hit by the tariffs, that also just shows how much the dependency was there. Now typically, when there is an increase in demand, the supply
should ramp up as well. Unless they keep the supply artificially depressed to be able to maintain those price points or get higher prices (market failure).
Signs are not the only thing going up - look up how much food is imported, how much fruits are imported.... Or how much potash to make your domestic fruits / farmland is imported.
Have to be careful here, not all of the more common potash varieties are kind to all fruits/veggies. Potatoes, peppers, tomatoes, tobacco even have to be careful with the source of potassium one is using. Around here, we have a lot of hickory, oak and maple trees. Mix that in compost (at least for my size of spread) and that is a far better source if one is growing anything that has a concern about sources (which most of the crops that I do have have that issue, even though they are also high potassium consumers as well, or atleast some of them are).
One downside with the proliferation of grocery stores is that most people have lost the knowledge/desire for more self sufficiency. Although I am hearing more hens/roosters that aren't in my flock, so I know that has at least has gotten an uptick.
And people would be surprised about how long things take to get to the grocery store, even if they are local, which makes one wonder about what they are doing to keep them "fresh", we have come a long way since the "flavor Savr" tomatoes (I would argue not in a good way, but that's another topic).
