canonical product

Callaway Big Bertha B21

Single Iron · Ultra Game Improvement

33
live listings · 2 retailers: $38–$155
asking range: $90
fair, all conditions · 21 comps: ~$68 · 30d
clears at · 40 organic delists (180d) · delisted ≠ sold

buy now or wait?BUY

The value curve is flat — waiting buys you almost nothing.

≈ $0/mo depreciation (model)clears ≈ $68 (measured · delisted ≠ sold)

forecast: product evidence · verdict recomputed nightly

The verdict

each line cites its basis

Buy window: the cheapest live copy sits $52 under the all-condition fair bar. — fair $90 · 21 comps
Sellers ask ~$28 over what actually clears — offers near $68 are market-typical. — 40 organic delists, 180d · delisted ≠ sold

What it has been selling for

monthly medians since 2026-02

monthly median ask · open points are sparse months (<8 observation days) drawn as facts, never interpolated — the line knits itself in as nightly snapshots accumulate

Value over time

value model, curve fit on this product · 236 obs

$79–$124
typically sells for: ≈ holding value
value trend: 97%
held over 3 yrs

median model value by product age, 80% band — about 1 in 5 sales lands outside it · rebuilt nightly

Fair price by condition

Average19 comps: $90

own one? check what it's worth →

Live listings

cheapest first · 33 live

Callaway Big Bertha B21 Irons

AverageStiffCallaway Pre-Owned

Callaway Big Bertha B21 Irons

AverageStiffCallaway Pre-Owned

Callaway Big Bertha B21 Irons

AverageRegularCallaway Pre-Owned

Callaway Big Bertha B21 Irons

AverageStiffCallaway Pre-Owned

Callaway Big Bertha B21 Irons

AverageStiffCallaway Pre-Owned

Callaway Big Bertha B21 Irons

AverageStiffCallaway Pre-Owned

Callaway Big Bertha B21 Irons

AverageRegularCallaway Pre-Owned

Callaway Big Bertha B21 Single Iron 7 Iron FST KBS MAX CT80 Steel Regular Right Handed 37.0in

AverageRegular2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron FST KBS MAX CT80 Steel Regular Right Handed 37.0in

AverageRegular2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron FST KBS MAX CT80 Steel Regular Right Handed 37.0in

AverageRegular2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron FST KBS Max 80 Steel Regular Right Handed 37.0in

AverageRegular2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron FST KBS MAX CT80 Steel Regular Left Handed 37.0in

AverageRegularLH2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron 7° Callaway RCH Iron 45 Steel Ladies Left Handed 35.5in

AverageLadiesLH2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron FST KBS MAX CT80 Steel Regular Right Handed 37.25in

AverageRegular2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron FST KBS Max 80 Steel Regular Right Handed 37.25in

AverageRegular2nd Swing

Callaway Big Bertha B21 Single Iron 8 Iron Callaway RCH 65i Graphite Senior Right Handed 36.5in

Below AverageSenior2nd Swing

Callaway Big Bertha B21 Single Iron 9 Iron Callaway RCH 65i Graphite Senior Right Handed 36.0in

Below AverageSenior2nd Swing

Callaway Big Bertha B21 Single Iron 6 Iron Callaway RCH 65i Graphite Senior Left Handed 37.5in

AverageSeniorLH2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron Callaway RCH 65i Graphite Regular Right Handed 37.0in

AverageRegular2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron Callaway RCH 65i Graphite Senior Right Handed 37.0in

AverageSenior2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron Callaway RCH 65i Graphite Senior Right Handed 37.0in

AverageSenior2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron Callaway RCH 65i Graphite Senior Right Handed 37.0in

AverageSenior2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron Callaway RCH 65i Graphite Regular Right Handed 37.0in

AverageRegular2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron Project X Catalyst 55 Graphite Senior Right Handed 37.0in

AverageSenior2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron Callaway RCH 65i Graphite Regular Right Handed 37.0in

AverageRegular2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron Callaway RCH 65i Graphite Senior Right Handed 37.25in

AverageSenior2nd Swing

Callaway Big Bertha B21 Single Iron 7 Iron Callaway RCH 65i Graphite Senior Right Handed 36.75in

AverageSenior2nd Swing

Callaway Big Bertha B21 Single Iron 6 Iron FST KBS MAX CT80 Steel Regular Right Handed 37.75in

AverageRegular2nd Swing

Callaway Big Bertha B21 Single Iron 6 Iron Stock Graphite Shaft Graphite Senior Right Handed 36.25in

Above AverageSenior2nd Swing

Callaway Big Bertha B21 Single Iron Pitching Wedge PW Callaway RCH 65i Graphite Senior Right Handed 35.5in

Below AverageSenior2nd Swing