Return item broken

[ppalacio]

I got and Iphne 6 as a gift and i sold it.

After 3 months , the buyer decide to return the item, sayimf that the iphone was not new, and pay pay refund the monet.

I got the iphone back brokem, so I made a claim.

Now the buyer is offering 90 dollars less that what I sold it, as a refund.

Should I accept the partial refund?  I will loose 90 dollars plus i have to fix the phone, another 125 dollars.