I bought my MA refub from the DJI store (Germany). Cheapest price for a new standalone mavic air was 849 Euro and that was in a local shop. A refub Mavic Air at DJI store was 679; I got a further 10% off with a student discount code; which brought the total price down to 611 Euros. When it arrived, I opened the box expecting to find a well aged but functional drone but to my surprise, it was as good as new. No visible marks or scratches on the drone itself or the battery. But the charger seems to have been used before, which I did not mind at all. I hunted a used Mavic at ebay for a while, but even there the prices were around 550 - 600. At that price point, I felt refub with a year's worth of manufacturer warranty was the better option and I am happy with my decision. Bird has flown more than a few times since then and has performed flawlessly.
I bought the mavic air fly more through the refurb and it looks like it was 100% brand new. Saved a pile of money and got the same warranty as a new one. I've got about 5 hrs flying it so far and I see no downside