This is a product I use all the time. It’s that cool! While I do use other brands on occasion, like the Black Magic Pre Tied Rig range I find the Jarvis Walker Pre Made Fishing Rigs to be a perfect, inexpensive solution.
I say inexpensive. It’s true tying rigs yourself is generally cheaper. However, as a programmer, I learned decades ago that reinventing the wheel often returns the lowest value on your time.
You didn’t think programmers write all the code every time we write software, did you? We buy libraries of “code” and “widgets” and all kinds of stuff. So we can focus on the task our software is aiming to achieve. Making us more productive and reducing errors and complexity.