I had a horrible — borderline fraudulent — experience with Back Market that cost me hundreds of dollars and 7 days of lost productivity. I ordered a 15.4-inch MacBook Pro (July, 2018) from Back Market. A third-party seller, Koala Stash, sent me a 13-inch. MacBook Pro by itself — not even a power cord. After I complained to Koala Stash, the seller said they had no 15.4-inch laptops in stock. My only options were to return the computer or accept an $80 partial refund. I had to order a power cord separately, which took 2 days. To make matters worse, the laptop from Back Market wasn't even that cheap. I could have bought a similar one from Apple without the headaches. I ignored some negative reviews of Back Market, and I regret it. :( I recommend that you take the negative reviews seriously.