This is a virtual product that allows you to pay for a custom service or custom option of a product.
For instance you would like to get a custom laser cut case or add a special shipping option.
Or you would like to make a batch of custom Moteinos.
You would contact us over email to discuss/agree the cost of that service.
For example if the agreed service costs $10 you would add 10X of this product to your cart and mention what this is for to avoid confusion.