Rolex Datejust 31 Steel 178240

“Discontinued Midsize”

B-

Grade B-: solid, selectiveToday's call · Hold

Short termunder 1 yearFairMid term1 to 3 yearsFairLong term3+ yearsFair

Rank #75 of 113 rated pieces in the Rolex Vault

Retail (2015)$6,800

Typical sale today$6,500Typical range $5,200 to $7,400

Vs retail-7%

1-year+5%

Market range: the middle half of 23 recorded eBay sales in the last 12 months.

Open in the interactive VaultLive eBay listings ↗︎

Market price history

Median recorded eBay sale price for each quarter with 3 or more sales. Dashed line marks the 2015 retail price.

Investment scorecard

Momentum64Measured price direction: the median recorded sale of the last 4 months against the median of 8 to 12 months ago. 50 means flat; small samples are pulled toward 50.

Liquidity48How easily it sells: recorded sales in the last 12 months (300 or more scores 100) and eBay's 90-day sell-through rate.

Scarcity61Demand against supply. For modern pieces, how far the market sits above or below current retail, plus a lift if production has ended. For vintage, how rarely one comes up for sale.

Value entry27Where the latest quarter's median sale sits inside its own 3-year range. Buying near the low scores high; buying at the high scores low.

Condition safety56How safe a typical example is: the age of the design, plus how tightly sale prices cluster (a wide spread means condition and originality swing the price).

The story

The discontinued steel 31mm, sitting dead-center in the unisex size wave with a modern movement and sapphire crystal.

Drafting behind the 6827 and 68273 with a fraction of their vintage risk.

The discontinued steel 31 is the definition of a quiet chart: nothing dramatic, just steady absorption of fixed supply by a market that discovered midsize. Discontinued in 2018 and succeeded by the steel smooth-bezel 278240.

It's the practical pick of the vintage-adjacent midsize market: modern enough for daily wear, discontinued enough to have a floor. The blue and silver dials dominate; rarer colors move first.

Our verdict: The low-risk midsize play. Same trend, modern build, still under original retail.

Configurations

Sizes	31mm
Case & bracelet	Oystersteel, 18k white gold bezel
Factory bracelet	Jubilee or Oyster (Jubilee most common)
Factory bezels	Smooth steel; Fluted white gold (178274)
Notable dials	Silver; White Roman; Blue
Caliber	2235
Production	2000s to 2018 (discontinued)

Recent recorded sales

Sold	Example	Price
Oct 8, 2026	Pre-owned · eBay sale ↗︎	$5,700
Sep 28, 2026	Pre-owned · eBay sale ↗︎	$6,950
Sep 27, 2026	Pre-owned · eBay sale ↗︎	$4,795
Aug 13, 2026	Pre-owned · eBay sale ↗︎	$6,500
Aug 11, 2026	Pre-owned · eBay sale ↗︎	$9,225
Jul 18, 2026	Pre-owned · eBay sale	$8,580

Recorded eBay completed sales, logged at our last data refresh.

If you like this one

Two-Tone DJ41126333 · Grade B Engine-Turned Quickset16030 · Grade B Previous-Gen Two-Tone 31178273 · Grade B Gold Midsize President68278 · Grade B

See the Discontinued Midsize in the Vault Browse all references

Quick answers

How much is a Rolex Datejust 31 Steel 178240 worth?

Recorded eBay sales from the last 12 months put the typical Rolex Datejust 31 Steel 178240 at $6,500, with the middle half selling between $5,200 and $7,400 (23 sales). Condition, box and papers move the price within that range.

Does the Rolex Datejust 31 Steel 178240 sell above retail?

No. The typical sale of $6,500 is about 4% below the $6,800 retail (2015).

Is the Rolex Datejust 31 Steel 178240 a good investment?

The Crown Index grades it B- (72/100) from real resale data, and today's call is hold. Solid resale, with limited room to grow from today's price. Past prices are not a forecast.