I don’t think it matters the brand on these particular items. Just like aspirin, naproxen, milk, there are just certain things-that whether you buy a ‘name brand’ or a ‘knock-off’ it works the same.
Also, I’ve noticed most things at the $ store are actually more expensive than Walmart, go figure? For the most part those items, condoms, pregnancy tests, etc, are normally kept at the register, you have to bring a card to get the product- like sudafed. As for the $ store pregnancy test being effective, yes, well the pregnancy test anyways. And this was the last of 6 at home tests for me to take and the only to come out positive.
As far as an ovulation test, why spend more $ than needed? Obviously if someone is buying an item like that they plan on having a child, so why the hell spend anymore $ than you need be. Because ONCE you have that baby, the cheaper you can buy something the better!