I was very interested in the engineering solutions of how this spray bottle allows for spraying stiffness regardless of the angle at which it is held. The thing is, a regular bottle with a siphon tube has a thin tube for liquid intake that reaches only so far, and when the liquid level drops below it (this can happen when the bottle is tilted), the sprayer stops working. In this bottle, however, the bottom part where the liquid intake occurs is equipped with a heavy plastic ball that is always directed downwards, no matter the bottle's position. This allows you to tilt the bottle at any angle, and the tube delivering the liquid will always be in contact with the liquid if there is any in the bottle. The bottle itself is made of high-quality, sturdy plastic, and the sprayer head, like that of most such products, has two positions: open and closed. This prevents accidental spraying when it's not needed. The cap fits tightly onto the bottle's neck, and I didn't notice any leaks during spraying. In other words, the bottle is quite airtight. Now, about the price. The set includes two bottles, which should be taken into account when considering the cost of one bottle. Of course, a regular spray bottle can be purchased much cheaper, and if there is no need to tilt the bottle, you can certainly buy a spray bottle for much less. However, such a bottle cannot be turned upside down. That's why I base my rating solely on the quality and reliability of the product, not on its price.