Which model is your ?This is a very good model. Offline it goes lowest to 14k.
It has wifi, easily refillable. Has duplex. My friend is using it since 3-4yrs as a mini xerox machine. Works great. Very popular.
I have the cheaper model with just printer. Its amazing. I bring a 100 rs toner and refill + reset whenever required. Nothing beats it.
By refilling it yourself, you can save around 200 per refill and in a few yrs you'd save enough to get another one of these printers if your volume is high
The duplex works very well. I have printed documents with 500 pages in duplex (in bunch of 50 or 100s)