Hello, There are three clean and working home oxygen generators available. Two Philips devices and one Novo device. The Philips devices are priced at 1000 Riyals each and the Novo at 800 Riyals. The location is in Al-Shuhada neighborhood, east of Riyadh. There are also 40-liter oxygen cylinders available in the largest size. Please contact me via WhatsApp.