Like-New, Good, Fair: How Cosmetic Grading Actually Works

If you have ever tried to sell a used Mac, you have run into the vocabulary: like-new, good, fair, Grade A, Grade B, "excellent." Cosmetic grading is the shorthand the resale world uses to describe how a machine looks, separate from how it works, and it is one of the biggest levers on what a used Mac is worth. Understanding how graders actually assess wear — and why the honest answer almost always beats the flattering one — makes the whole process faster and less nerve-racking.

The key thing to understand up front is that cosmetic grading is about appearance, not function. Every reputable grading system tests the machine for full functionality first, then sorts it by looks. As Back Market puts it in its refurbished MacBook guide, "No matter the grade, every device is guaranteed to be 100% functional." A scratched lid and a dead trackpad are two completely different problems, and grading only addresses the first.

What each cosmetic grade actually means

Different companies use different labels, but the tiers line up closely once you translate them. Back Market's scale runs Premium, Excellent, Good, and Fair. iFixit, which grades displays for the repair trade, uses A-Stock, B-Stock, and C-Stock. The definitions rhyme:

• Like-new / Premium / A-Stock. Essentially flawless. Back Market describes Premium units as "absolutely flawless. You would never know they were pre-owned by looking at them." iFixit's A-Stock displays are "in excellent condition, often with no cosmetic blemishes," tolerating at most "one or two faint scratches on the glass surface — not visible when the display is on."
• Good / B-Stock. Light, close-up wear only. A Good machine has "light micro-scratches that you won't see if you're more than 20 inches away," per Back Market. iFixit's B-Stock allows a few faint scratches, a short deep scratch, and minor casing wear on a limited fraction of the surface.
• Fair / C-Stock. Visible use, still fully working. Fair units "show some signs of wear," with screen scratches "slightly visible when the device is on" and "a few visible scratches and dents" on the body. iFixit's C-Stock permits longer, deeper scratches and "minor dents in the corners of the metal casing."

What graders are actually looking at

Cosmetic grading is more systematic than "eyeball it and guess." Graders examine the same handful of areas that a careful buyer would. AppleInsider's guide to buying a used Mac without getting ripped off tells shoppers to "look over the casing for dents, cracks, and deep scratches, especially near the corners and hinge" — precisely the spots a grader inspects, because damage there can hint at a past drop.

For the display, the standard test is to open a solid white and a solid black background under good lighting and look for scratches, coating wear, uneven backlight, and dead pixels. iFixit's grading standard is explicit that the question is whether a scratch is "visible when the display is on," since a faint mark you cannot see with the screen lit barely affects value, while one that reads through your work does. iFixit also carves out a separate "Delaminated" category for the anti-reflective-coating breakdown that afflicts certain Retina MacBook Pros — a reminder that some display defects are model-specific, not just ordinary wear.

The main assessment points, in roughly the order they move a grade:

• The screen. Coating wear, scratches visible when lit, and hairline marks matter most because you stare at them.
• Lid and casing corners. Dents and deep scratches near the corners and hinge carry extra weight.
• Keyboard deck and palm rest. Shiny wear spots and key-legend rub-off.
• Ports and feet. Chipping around ports, missing rubber feet, bent port lips.

Where cosmetic grading stops and function begins

Grading tiers assume the machine works. The moment something is actually broken, it leaves the cosmetic scale entirely. iFixit is blunt that "any functional issue," cracked glass, liquid damage, and connectivity problems disqualify a display from cosmetic grading altogether — those are condition issues, priced separately.

Battery health sits in a useful middle ground: it is not cosmetic, but it is easy to check and it affects value. Apple notes that most modern Mac laptop batteries are rated for around 1,000 charge cycles and are "designed to retain up to 80% of its original charge capacity at its maximum cycle count." You can read your own cycle count by holding Option, clicking the Apple menu, choosing System Information, and looking under Power. A grader will, so knowing the number before you list saves surprises.

Why honest cosmetic grading pays

It is tempting to round up — to call a Good machine "like-new" and hope the buyer is not fussy. That backfires. Any serious buyer, and any instant-offer service, verifies condition before money is final, so an inflated grade just delays the transaction and invites a re-quote. The better approach is to describe exactly what you see: name the scratches, note the corner ding, disclose the battery cycle count.

Accurate grading is also what lets a buyer commit to a firm figure. When you describe the machine truthfully, the offer you get is the offer you keep — nothing changes on inspection because nothing was hidden. If you would rather skip the guesswork about which tier your Mac lands in, describing its real condition and getting an instant offer takes about thirty seconds, and the number holds because it was based on the truth from the start.

A few practical habits make your self-assessment match a grader's:

• Inspect under bright, even light, with the screen both on and off.
• Photograph the lid corners, palm rest, and any specific marks straight on.
• Check the battery cycle count and condition in System Information.
• When you are between two grades, describe the flaws and let the grade follow the facts.

The bottom line

Cosmetic grading is not a mystery or a sales trick — it is a consistent language for describing wear on a working machine, built around a short list of things every grader checks: the screen, the corners, the deck, the ports, and the battery underneath it all. Learn what like-new, good, and fair really mean, describe your Mac as it actually is, and grading works in your favor instead of against you. Honesty is not just the ethical play here; it is the one that gets you a firm number the fastest.