Median recorded eBay sale price for each quarter with 3 or more sales. Dashed line marks the 2026 retail price.
Investment scorecard
Momentum50Measured 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.
Liquidity56How 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 entry50Where 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 safety85How 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
Tudor lists the Black Bay 54 Blue reference 79000B at $4,725 in the US (tudorwatch.com, November 2026).
23 recorded eBay sales in the last 12 months, with a typical sale of $3,583.
Our verdict: Sells for about 24% under its $4,725 boutique price. 23 recorded eBay sales in the last 12 months, with prices flat over the year.
How much is a Tudor Black Bay 54 Blue 79000B worth?
Recorded eBay sales from the last 12 months put the typical Tudor Black Bay 54 Blue 79000B at $3,583, with the middle half selling between $3,400 and $3,972 (23 sales). Condition, box and papers move the price within that range.
Does the Tudor Black Bay 54 Blue 79000B sell above retail?
No. The typical sale of $3,583 is about 24% below the $4,725 retail price.
Is the Tudor Black Bay 54 Blue 79000B a good investment?
The Crown Index grades it D+ (55/100) from real resale data, and today's call is wear, not invest. Weak resale; buy it to wear, not to make money. Past prices are not a forecast.