The Pypab device

Hello, A Yuwell BiPAP ventilator was purchased approximately 20 days ago. The device is new and has been used for only half an hour. The reason for selling is no longer needing it. It comes with a golden warranty— in case of malfunction, it will be replaced with a new unit. The purchase price was 4,450 SAR, as shown on the invoice. Selling price is 4,000 SAR, non-negotiable. Location: Al-Zulfi. Note: This is a BiPAP device, which is expensive and different from CPAP devices that cost around 2,000 SAR.