Price flexibility

It would be great if, when we assign a product to a customer ourselves, we also had the option to change the price (for example, when we offer a discount).
I would prefill the standard price of the product in the text box, but make it editable

Furthermore, the current system also requires you to send the link to your customer using an external program. Wouldn’t it be much easier if we could select a customer from our customer list right in this window?
I would keep the link system alongside it for payments to guests or one-time customers.