Smartphones
“Sellers price cracked backs like broken phones. Buyers know the difference.”
The iPhone 14 Pro Max 256GB is the most-monitored smartphone on Marketplace right now. Sellers who upgrade to a 15 and want quick cash price it at $500–$550 without checking eBay. Resellers know it sells used for $720–$780. That gap does not close. It widens every time a new iPhone ships and the previous generation floods the secondhand market with sellers who just want it gone.
iPhone 13 Pro listings with cracked backs are the beginner entry point. A broken-back 13 Pro that works perfectly will list for $80–$120. Wholesale buyers — repair shops, refurb operations — pay $180–$230 for working units regardless of cosmetics. If you know the difference between a cracked back and a cracked screen, you're already ahead of most sellers.
Samsung Galaxy S23 Ultra follows the same pattern at a slightly smaller margin. Sellers are often upgrading to the S24 or switching to iPhone and haven't checked secondhand pricing. A $450 listing on a working S23 Ultra leaves $150–$200 on the table for a reseller who can verify it's not carrier-locked.