canoe.golf

canonical product

Callaway Big Bertha B21

Single Iron · Ultra Game Improvement

59
live listings · 2 retailers
$16–$142
asking range
$90
fair, all conditions · 39 comps
~$66 · 11d
clears at · 37 organic delists (180d) · delisted ≠ sold

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Get an email when the best live price drops. No account — just an address and, if you want, a target.

buy now or wait?BUY

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

≈ $0/mo depreciation (model)waiting 3 months ≈ $0 cheaper (model)clears ≈ $66 (measured · delisted ≠ sold)

copies that clear organically do so quickly (measured) — good examples don't linger.

forecast: product evidence · verdict recomputed nightly

The verdict

each line cites its basis
  • Buy window: the cheapest live copy sits $74 under the all-condition fair bar. — fair $90 · 39 comps
  • Sellers ask ~$24 over what actually clears — offers near $66 are market-typical. — 37 organic delists, 180d · delisted ≠ sold

What it has been selling for

monthly medians since 2026-02
$90$105$12102070809102026-07 — median $108 · 59 listings · 18 observation days2026-08 — median $90 · 51 listings · 29 observation days2026-09 — median $90 · 52 listings · 26 observation days2026-10 — median $90 · 44 listings · 14 observation days2026-02 — median $121 from only 2 observation days (33 listings)$90
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 · 416 obs
$66–$112
typically sells for
−1%/yr
value trend
92%
held over 3 yrs
$50$100todaynew5 yr

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

Fair price by condition

Average33 comps
$90
own one? check what it's worth →

Live listings

cheapest first · 59 live

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

AverageSenior2nd Swing
$16

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

AverageSenior2nd Swing
$16

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

AverageRegular2nd Swing
$41

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

AverageSenior2nd Swing
$45

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

AverageStiff2nd Swing
$45

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

AverageSenior2nd Swing
$45

Callaway Big Bertha B21 Irons

AverageStiffCallaway Pre-Owned
$54

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

AverageRegular2nd Swing
$54

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

AverageSenior2nd Swing
$60

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

AverageRegular2nd Swing
$60

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

AverageSenior2nd Swing
$60

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

Below AverageSenior2nd Swing
$80

Callaway Big Bertha B21 Irons

AverageCallaway Pre-Owned
$80

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

AverageRegular2nd Swing
$81

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

AverageRegular2nd Swing
$90

Callaway Big Bertha B21 Single Iron 7 Iron FST KBS MAX CT80 Steel Regular Right Handed 37.5in

AverageRegular2nd Swing
$90

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

AverageRegular2nd Swing
$90

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

AverageRegular2nd Swing
$90

Callaway Big Bertha B21 Single Iron 7 Iron Callaway RCH 45 Graphite Ladies Right Handed 36.25in

AverageLadies2nd Swing
$90

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

AverageLadiesLH2nd Swing
$90

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

AverageRegular2nd Swing
$90

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

AverageRegular2nd Swing
$90

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

AverageRegular2nd Swing
$90

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

AverageRegular2nd Swing
$90

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

AverageRegular2nd Swing
$90

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

AverageRegularLH2nd Swing
$90

Callaway Big Bertha B21 Single Iron 7 Iron FST KBS MAX CT80 Steel Stiff Right Handed 37.5in

AverageStiff2nd Swing
$90

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

AverageRegularLH2nd Swing
$90

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

AverageRegular2nd Swing
$90

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

AverageRegular2nd Swing
$90