There is a moment in a store, or on a product page, when you make an assumption and mentally decide a thing is cheap. You glance at the product and something in you files it under not for me, and you move on. If you slowed the moment down and asked yourself why, you would struggle to answer. It just looked cheap.
I'm trained a bit to know the specifics of what's making it 'feel' cheap but I consciously notice it when I'm sitting with someone while they browse through products on Amazon page and make remarks.
I've spent enough time on factory floors and in front of first-shot parts that I started to see what my eye had been doing all along. The judgement isn't vague at all. The eye is running down a checklist of very specific, very nameable defects, and most of them have nothing to do with how much the thing cost to make.
That last part is the one worth sitting with. Stay with me here. We tell ourselves that cheap looks cheap because cheap is cheap. That a better-looking product needs a bigger budget, a richer material, or a more expensive process. Sometimes that's true. But mostly what reads as cheap is the absence of discipline, and discipline is roughly free. Too meta? Okay, let me explain.
What the eye is actually doing
Start with the thing your eye notices first and can least explain: the gaps. Literal gaps.
Wherever two parts of a product meet - a lid and a body, a panel and a frame, a button and the surface it sits in, there is a line between them. On a good product that line is even. The same width all the way along, the same width on the other side, the two surfaces flush so light doesn't catch one edge and not the other. On a cheap product the line is irregular or uneven. It's two millimetres here and half a millimetre there. One panel sits slightly raised against it's mating panel so there's a little step you can feel with a fingernail and see as a shadow. You don't consciously measure any of this but your visual system is exquisitely tuned to parallel lines and broken symmetry, and a gap that drifts from wide to narrow lights up the same part of the brain that notices a picture frame hanging crooked.
The car industry has a whole vocabulary for this. Panel gap. Flush and gap. A misaligned bonnet, a boot lid that sits a hair too high, a headlamp with more daylight on one side than the other are things that buyers read as a proxy for everything they can't see, the engine and the welds and the things that will or won't fail in five years. The interesting fact is that the part isn't broken; it's just inconsistent. Luxury marques don't use exotic steel to get tight gaps; they use tighter tolerances and they hold them. The gap that looks expensive and the gap that looks cheap can be the same size on average. What separates them is variance.
Back in 2023, when we were finalising trials for our first Native devices, panel gaps is what I spent fighting on the most. That's the first time we got a couple of digital vernier calipers. Given my hardware illiteracy back then, I had to demonstrate by comparing panel gaps in cars with our water purifier machines.
Then there's the surface of the plastic itself.
Most of what's around you is injection moulded (hot plastic pushed into a steel mould, cooled, knocked out). The process leaves marks. One of them is a sink mark, a shallow dimple on an otherwise flat surface, usually sitting right over a thick spot or a rib on the inside of the part. It happens because the surface skins over and cools while the thick core behind it is still shrinking, and the shrinking core pulls the surface inward. On a black glossy panel under a studio light, a sink mark is a soft undulated surface your eye picks on without quite locating.
Then there are the ejector-pin marks which are faint circles, sometimes a ring of them, where the pins that push the part out of the mould pressed against it. On a carefully designed product these sit on hidden faces. There's flash, a thin fin of plastic squeezed out along the seam where the two halves of the mould met, left unfiled so you get a sharp little ridge along an edge that should have been clean. And there's the parting line itself which on a good part is placed along a natural edge where nobody looks and on a bad part runs straight across a visible face like a scar.
Interestingly, none of these defects costs more material. They're misses and failures of mould design, of process control, of someone caring enough to put the parting line where it belongs and to file the flash before the part ships.
CMF tells of a 'cheap' product
One of my favourite finishes, gloss, is the trap that catches people who are trying to look premium and achieve the opposite.
High gloss reads as expensive in the render. It's shiny and looks great with all the perfect light reflections and studio environment shot renders. On the real part it's merciless actually. A glossy surface is a mirror, and a mirror shows every flaw. I'll show every sink mark, every flow line, every speck of dust that landed in the paint, every fingerprint the customer leaves seconds after unboxing. On the other hand, a matte or lightly textured finish forgives all of it. The texture scatters the light so the eye never gets a clean reflection to find faults in, and it hides fingerprints, and it photographs as soft and considered. The cheap instinct is to go glossy because glossy looks rich.
Colour is the next one, and it's the one suppliers quietly get wrong all the time. A product made of several plastic parts with a white body, a white bezel, a white button needs all the whites to be the same white. But, they rarely are, unless someone forces them to be. Different parts come from different moulds, sometimes different suppliers, sometimes different batches of the same pigment, and the colour drifts. The reality is that two parts can match perfectly under the factory's fluorescent tubes and then split apart under the warm light of a living room, one going slightly mint, the other slightly grey. The eye reads the mismatch instantly as these things don't belong together, which is one short step from this was thrown together cheaply. Holding colour across parts is unglamorous, spectrophotometer-and-spreadsheet work. It costs attention, and time, and patience.
And then there is the family of sins that are purely about restraint, where spending more actively makes things worse.
The same logic runs through the graphics on the panel. Count the fonts on a cheap appliance sometime. Count the colours. There's a bold sans for the brand, a different italic for a feature name, a third typeface for the warning text, an icon set that doesn't match any of them, and a red flash announcing some certification nobody asked about. This is most common in large home appliances. A premium panel often has one typeface, two weights, and a great deal of empty space.
The structural tells of a 'cheap' product
Visible fasteners are a giveaway. A row of cross-head screws across the front face says we assembled this the fast way and didn't mind you seeing the joins. Hidden fasteners like clips, screws tucked behind a label or sunk into the base, parts that snap together along a designed seam say someone planned the assembly so the join would disappear. This is mostly free. It's a decision made early, in the way the parts are split and where the bosses go, and if you make it late it's expensive, and if you make it on time it costs nothing but deeply thought through decisions.
Wall flexing is another. A panel that visibly bows when you press it or a side that flexes inward when you grip the product to lift it are usually thin walls, no ribbing, and plastic chosen by the gram due to cost reduction pressure. The eye half-sees it in the way light bends across a surface that isn't quite holding its shape, and the hand confirms it. You can stiffen a wall with internal ribs that adds minimal material and no visible bulk. Whether someone did is a question of whether they cared about the part feeling solid or only about the part existing.
Mismatched radii are the subtlest of the lot and the one that separates considered design from assembled design. Last year, I saw a smart home gym equipment. I met the founders and they asked for my feedback. My feedback was simple: The machine looked like an assembled prototype than a finished product. The radii of almost all parts were different from each other. A radius is the rounding on a corner or an edge. On a coherent product the radii relate to each other where the corners of the body, the corners of the button, the rounding on the screen cutout all feel like they came from the same hand. On an incoherent one they're random. A tight corner next to a soft one, a button with a fat radius sitting in a hole with a sharp one. No single radius is wrong. The relationship between them is, and the eye reads the lack of relationship as carelessness even when it can't name what it's looking at.
The pattern
Read back down that list and a single thing keeps surfacing. Almost none of the tells are about cost. They're about consistency and restraint.
Even gaps instead of wandering ones. Colour that matches across parts. Sink marks and flash and ejector pins kept off the faces you look at. Matte instead of gloss. One typeface instead of five. Hidden fasteners instead of a row of screws. Radii that are consistent. Every one of these is available to a maker working at any price point, because every one is a decision rather than a material. The expensive-looking version and the cheap-looking version are frequently made from the same plastic on the same machine for the same money.
This is the part that should bother you if you build things, in a useful way. It means the cheapness you're trying to design out of your product is mostly your own doing. Not the budget's.
The budget version (COGS push) of this insight is comforting and slightly false: spend more, look better. The truer version is harder. You can look better without spending more, and the reason you don't is that holding consistency across hundreds of parts and dozens of reviews is boring, relentless work that nobody thanks you for, and the eye that catches the failure is a stranger's, three weeks from now, glancing at your product in a store and filing it under not for me without ever knowing why.