Hi Jason. I bought an inexpensive ph meter on Amazon and I think it works fine as long as you follow the instructions which include pouring distilled or RO
water into the spot you are going to test right before testing it.
I bought it because I wanted to know what the PH was of my soil in various places in my
yard for various reasons. I have been putting in a lot of new plants, including a vegetable garden, so I needed to know if my soil was something they'd like or if I needed to amend the soil prior to planting. Also, some of the plants that were in our yard when we moved in weren't doing that well (including the lawn) and I wanted to determine whether it was because of the ph of the soil they were in. A number of my plants are doing much better as a result of using this tool and amending the soil as indicated. And finally, I have hydrangeas and I'd like to turn their blooms blue, for which a certain acidity level is needed.
I'd prefer to have a test I can do at home to save time and money. Different areas of my yard have different ph levels depending on the level of decomposed organics in the soil or the amendments that have been added to it over time. Plus, if you test the soil, determine you need to change the ph and add amendments to it to make it more acid or alkaline, you're going to have to keep testing it periodically until you get the ph where you want it. That's a lot of testing.