Replacing a single laptop key is cost effective and saves money

Replacing a single key on a laptop keyboard can be a cost-effective solution when compared to replacing the entire keyboard for a few reasons: 

Lower cost: The cost of replacing a single key is significantly lower than the cost of purchasing and installing a new keyboard. This is especially beneficial if the rest of the keyboard is in good working condition and only one key is damaged or missing. 

Labor cost savings: Replacing a single key is a relatively quick and easy process that can be done by the user, eliminating the need for professional repair services, which can be costly. 

No need to purchase new peripherals: When an entire keyboard is replaced, it may be necessary to also purchase new peripherals such as a mouse or touchpad. Replacing a single key eliminates this additional cost. 

Avoiding the cost of a new device: In some cases, if a key is stuck or not working due to a hardware issue, it may be necessary to replace the entire keyboard, or even the entire device. Replacing a single key can avoid these costs. 

Keeps the original look and feel: Replacing a single key allows you to keep the same keyboard layout, backlight color, and keycap design, which can be important for some users, while replacing the entire keyboard may cause you to lose these features. 

It's worth noting that if multiple keys are not working, it may be more cost-effective to replace the entire keyboard. Additionally, depending on the location of the key, sourcing the replacement keycap, shipping and handling, and installation cost also need to be considered. 

In conclusion, replacing a single key on a laptop keyboard can be a cost-effective solution when compared to replacing the entire keyboard. It can save you money, time and maintain the original look and feel, and can help you avoid the cost of a new device. However, it's important to determine the cause of the problem before deciding whether to replace a single key or the entire keyboard.