I purchase an unlocked iPhone 7 from them. They sent me a phone that never powered up. I call their customer service and they told me to return the device, which I did. I asked for a full refund, but they said to me that they could not until the phone could be power on to verify the serial number. They were already assuming that I returned another phone. Anyway, after few days, I turned out that the phone they sent me had water damage according to their technical repairman. So, they deducted 56.50$ on my refund for the repair. They had the guts to charge me for the repairs. This is robbery.
In resume, they sent me a broken phone and made me pay for the repairs. This is ridiculous. Don't deal with this company as they say something but do another. Go somewhere else to buy a secondhand iPhone.