Acetate is the material most associated with quality frames, and also the one whose price is hardest to read from a quotation. Two buyers can receive quotes for "acetate frames" that differ by a factor of two for reasons that are nowhere on the page. This article breaks one frame down into the cost lines behind it, explains where each line moves the unit price, and sets out the questions that separate a transparent quotation from a padded one.

The seven cost lines behind one acetate frame

Before a price can be judged, the price has to be understood. A unit price for an acetate frame is broadly the sum of these lines:

None of these lines is visible on a one-line quotation that simply says "acetate frame, USD X". The exercise below is to make them visible.

Sheet grade — where premium material shows up in price

Acetate sheet is produced in a range from commodity domestic plate to the Italian-origin sheet most buyers recognise by name. The difference is not only brand: higher-grade sheet has tighter colour consistency, fewer streaks, better edge clarity after cutting, and more stable behaviour during tumbling. A frame built on a lower-grade plate needs more hand-finishing to hide defects, which quietly raises line 3 and line 5.

For a buyer, the actionable point is to specify the sheet grade or at least the origin class in the request, because the same model number quoted at two price points is frequently the same model on two different plates. Without that specification, a "lower price" may simply be a lower material — not a better deal.

Tumbling vs hand-polishing: what your finishing spec costs

Acetate is finished by tumbling the cut parts in media for a number of hours, then often hand-polishing to bring up the gloss and remove tool marks. Tumbling time scales the cost directly: a short tumble is cheaper but leaves a matte, slightly uneven surface; a long tumble plus hand-polishing produces the depth and shine associated with premium frames.

Two practical implications. First, finishing spec should be written into the order, because it is the easiest line for a factory to quietly trim when a price is forced down. Second, finishing is where a low quote and a high return rate connect: under-tumbled frames look unfinished and get refused at the retail level. A quotation that is unusually cheap on acetate is worth reading as a finishing shortcut until proven otherwise.

Colour count changes the order

This is the line most buyers miss. Producing five colours of a model in one run is not five times the work of one colour — the cutting, assembly and QC are largely shared, and the sheet is nested efficiently. Producing twelve colours spreads the same setup over more small batches, raises scrap on slow-selling colour ways, and increases the per-unit cost even when the order volume is identical.

The commercial consequence: a buyer who wants a wide colour range should consolidate into fewer, deeper colour runs rather than many shallow ones, or accept a higher unit price for breadth. A quotation that prices every colour the same is either averaging or guessing — both are worth probing.

How MOQ per colour and per size changes unit price

Minimum order quantity on acetate is almost always expressed per colour, and sometimes per size within a colour. The mechanics are simple: fixed setup cost (cutting program, tumbling batch, QC set) divided by the number of sellable units. A low per-colour MOQ means the fixed cost is spread over fewer units, so the unit price is higher; a higher MOQ spreads the same cost thinner.

For a collection launch, the cheapest path is usually to pick a small number of hero colours and order them deeply, then expand the colour range once sell-through is proven. Spreading the first order across the full colour board is the most expensive way to start.

Reading a quotation: three questions that reveal supplier quality

A quotation is a negotiation document, not a fact. Three questions separate a supplier who knows their cost from one who is guessing or padding:

1.      What sheet grade and origin are you quoting?If the answer is "acetate" with no grade, the price is not yet comparable to any other quote.

2.      What tumbling hours and finishing are included?If the answer is vague, finishing is the likely place the price will be "adjusted" later or silently reduced.

3.      Is the price per colour MOQ, and what is that MOQ?If the price is quoted on an unrealistically high MOQ, the real unit cost at your actual order size is higher than the headline.

A fourth, quieter question is worth asking of any supplier whose acetate price is far below the market: "which line did you take out?" The answer, or the inability to give one, tells you more than the number.

A worked example across three order sizes

The table below is illustrative, using a single acetate model and a single colour to show how unit price moves with order depth. The absolute figures are examples for understanding the relationship, not a price list.

The pattern holds across suppliers: the largest single lever on acetate unit price is order depth per colour, followed by finishing spec, then sheet grade. Colour count and size mixing are the two ways buyers inadvertently raise the price without changing volume.

Frequently asked questions

Why is acetate more expensive than TR90 or metal?

Because of material cost and finishing. Acetate requires long tumbling and often hand-polishing, and good sheet is costly. TR90 is injection-moulded and needs little finishing; basic metal is stamped and riveted. The price gap is mostly in lines 1 and 3.

Should MOQ be per model or per colour?

Typically per colour. A model is a shape; a colour is a production run. If a supplier quotes MOQ per model but you want six colours, confirm whether that means six times the per-colour minimum or one shared minimum — the difference is large.

Can I reduce price by accepting a shorter tumble?

You can, and some buyers do for a matte look. But confirm the finish is intentional and specified, not a silent reduction, because under-finished acetate reads as defective at retail.

Does a higher price always mean better quality?

No. A higher price can mean better sheet and finishing, or it can mean a less efficient factory. The questions above are how you tell which one you are paying for.

How many colours should a first order carry?

Fewer than feels natural. Two or three hero colours ordered deeply will usually cost less per unit and sell better than eight colours ordered shallowly, and it leaves room to add winners later.