Omega Seamaster Planet Ocean 600M 215.30.44.21.01.001

Grade C: wear it, don't flip itToday's call · Watch

Short termunder 1 yearFairMid term1 to 3 yearsWeakLong term3+ yearsFair

Rank #17 of 30 rated pieces in the Omega Vault

Retail (2025)$8,000

Typical sale today$4,400Typical range $3,700 to $4,700

Vs retail-47%

1-year-7%

Market range: the middle half of 47 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 2025 retail price.

Investment scorecard

Momentum33Measured 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.

Liquidity76How easily it sells: recorded sales in the last 12 months (300 or more scores 100) and eBay's 90-day sell-through rate.

Scarcity37Demand 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 entry51Where 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 safety77How 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 Planet Ocean line launched in 2005 as Omega's more robust 600m diver, and this 2016 generation added the Master Chronometer calibre 8900.

The 43.5mm case carries a helium escape valve and a ceramic bezel with Liquidmetal scale.

Omega replaced it in 2025 with a thinner 42mm fourth generation without date or helium valve.

Planet Oceans historically lose more value than the Diver 300M on the secondary market.

Our verdict: Replaced by a new 42mm model in 2025 and now trading around 55 percent of its last retail. A lot of watch for the money pre-owned.

Configurations

Sizes	43.5mm
Case & bracelet	Stainless steel
Factory bracelet	Stainless steel bracelet
Factory bezels	Unidirectional black ceramic bezel with Liquidmetal diving scale
Notable dials	Black polished ceramic with orange-accented minute track
Caliber	8900 Co-Axial Master Chronometer
Production	2016 to 2025 (discontinued)

Recent recorded sales

Sold	Example	Price
Nov 3, 2026	Pre-owned · eBay sale ↗︎	$4,250
Oct 31, 2026	Pre-owned · eBay sale ↗︎	$4,000
Oct 6, 2026	Pre-owned · eBay sale ↗︎	$4,100
Oct 3, 2026	Pre-owned · eBay sale ↗︎	$4,200
Sep 29, 2026	Pre-owned · eBay sale ↗︎	$3,650
Sep 17, 2026	Pre-owned · eBay sale ↗︎	$4,600

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

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Quick answers

How much is a Omega Seamaster Planet Ocean 600M 215.30.44.21.01.001 worth?

Recorded eBay sales from the last 12 months put the typical Omega Seamaster Planet Ocean 600M 215.30.44.21.01.001 at $4,400, with the middle half selling between $3,700 and $4,700 (46 sales). Condition, box and papers move the price within that range.

Does the Omega Seamaster Planet Ocean 600M 215.30.44.21.01.001 sell above retail?

No. The typical sale of $4,400 is about 45% below the $8,000 retail price.

Is the Omega Seamaster Planet Ocean 600M 215.30.44.21.01.001 a good investment?

The Crown Index grades it C (65/100) from real resale data, and today's call is watch. Middle-of-the-pack resale; fine to own, not one to buy expecting it to rise. Past prices are not a forecast.

Head to head

Omega Seamaster Planet Ocean 600M vs Omega Seamaster Diver 300M →