To make sure what you buy is really what you want, and your're paying a good price for it.
Because you could later find a better price , or with a p/o you could track down info about your order and money , you might need to know what it is you need to buy first.
so you don't make mistakes on purchasing items
For security reasons and to see if it is a necessary purchase.
So you wont mess up in the feture.
so you dont mess up and buy the wrong thing and so you can see if this is the product you want
Knowing if you need it and if important for your business
To get what exactly what you wanted for the right price.
so you can know who to the steps so u wont miss up
Write something about yourself. No need to be fancy, just an overview.