Oh yeah absolutely, but we could also just order them without the subscription for that right. I just notice some items fluctuate in price a lot, or sellers chop and change in having.. not even just the best price but reasonable vs. exploitative.
I don't use it for price, at least not wholly, but I do have to pay attention to it if I don't want a surprise ridiculous price. If that makes sense.
(Although I just noticed I said in top-level comment that it was just for price, heh. I suppose it's just a mix of things, and I've never really thought much about why I use it. Price can be nice, but definitely convenience too: the prompt to check if I do need more of whatever or can skip it, otherwise I would likely run out and only then order/go out to buy.)