COS Knee High Boots Resale Value

COS knee high boots: price by condition

Seller-declared grades, sterling with an approximate US dollar equivalent at £1 ≈ $1.33 (July 2026). What each grade means.

What holds its value across COS

• Oversized wool and wool-blend coats, which are the label’s signature and the thing buyers search it for by name
• Archive and limited-edition pieces, which are produced in small runs and are the only part of the range with a collectors’ element
• Plain, structured tailoring in neutral colours, which dates far more slowly than anything printed and stays saleable for years
• Heavier knitwear in merino and wool blends, which holds its shape where the cheaper high-street equivalents do not

What pulls COS resale value down

• Pilled knitwear, which is the commonest fault and shows immediately against the plain colours the label favours
• Faded blacks and washed-out greys, which are most of the range and where fading is most obvious
• Anything with a broken or replaced signature button or fastening, since the hardware is deliberately minimal and any substitute shows
• Basic jersey pieces, which are cheap enough new that a used one rarely justifies the postage on its own

Identifying and dating yours

1. The neck label reads COS rather than any sub-line, and the care label carries a product code buyers can search to confirm the season
2. COS sizing runs large and is cut deliberately oversized, so give flat measurements — buyers who have not worn the label before consistently order wrong
3. Photograph the shoulder seams and the inside of the coat, because the construction is most of why somebody chooses this label secondhand

What lifts any knee high boots, whatever the label

Knee-high boots are judged on shaft condition and calf fit, and the calf measurement is what listings most often omit.

• Supple leather with no cracking at the ankle
• Shafts that stand rather than slouch, if the style intends it
• Working full-length zips
• Recognised makers with a following

And what pulls one down

• Cracking at the ankle flex point
• Broken or split full-length zips
• Slouched or misshapen shafts
• Very narrow calf fittings

Working out what yours is worth

1. Measure the calf circumference and shaft height
2. Work the full-length zip several times
3. Flex the ankle and check for cracking

What to state in the listing

• Size as marked, with UK, EU and US equivalents
• Calf circumference and shaft height in centimetres, measured flat
• Heel height and type
• Material, zip condition, and whether the shaft is stretch-panelled

Brand, material, size and shaft: “Leather Knee High Boots, Size 6, Black, 38cm Calf”. Putting the calf measurement in the title is unusual and it works, because a large share of buyers have been caught out by a shaft that would not close and now search specifically for one that will.

Preparing and photographing it

1. Measure the calf circumference at the widest point of the shaft, with the boot zipped and lying flat.
2. Test the zips fully up and down. A sticking zip is the most common fault and, on a tall shaft, it makes the boot unwearable.
3. Stuff the shafts so they stand upright, and clean the leather or brush the suede before photographing.

1. The pair standing upright, full height, side on
2. A tape measure across the calf at the widest point of the shaft
3. Both soles and heel tips
4. The zip full length, the inside label, and any crease, scuff or scratch

When it sells best, and handing it over

Autumn and early winter carry this category almost entirely. Listed in September or October a good pair sells quickly; the same boots in April will barely be seen.

Bulkier than most footwear, so use a proper box and quote postage from an actual weight. Do not fold the shafts to make them fit a smaller box — leather creases permanently.

What buyers ask

Does COS clothing hold its value?

Reasonably, and better than most of the high street, because the designs are plain enough not to date. Coats and tailoring do best; plain jersey basics are barely worth listing on their own.

What size should I list a COS coat as?

Give the label size and the flat measurements together. COS is cut oversized and the label size alone misleads more buyers on this brand than on almost any other.

How much are COS knee high boots worth?

Roughly £25 to £110 depending on condition, against £25 to £110 for knee high boots generally. The identification points above are what move a listing to the top of that range.

What the fees would take elsewhere

At the mid-range £67 for COS knee high boots, against what the commission marketplaces would deduct:

Seller-side rates verified 26 Jul 2026, percentages only — the per-order and processing charges those platforms add are excluded, so the real gap is wider.

Listing is free and there is no commission — read how to sell knee high boots for the title, handover and timing, or the general knee high boots value guide if yours is not a COS.

See also: all COS value guides · value guides by brand · buying knee high boots · Shoes & Footwear · condition grades.