Selling my Surface tablet

I am trying to sell my Surface Pro tablet in order to work on some med bills. I have not had much luck selling it. I guess people do not like Microsoft

Microsoft Surface Pro X 13" Touch
$550

128GB SSD

Microsoft SQ1 processor 3.00 GHz

8GB RAM

The tablet is included along with the keyboard cover, protective case and Surface Pen (first gen, alkaline battery version)

The tablet has never been brought outside or used without it's case.

The AC adapter (USB-C) is included