canonical product

Callaway Big Bertha 2023

Iron Set · Ultra Game Improvement

8
live listings · 3 retailers: $488–$809
asking range: $733
fair, all conditions · 7 comps: ~$650 · 7d
clears at · 33 organic delists (180d) · delisted ≠ sold

buy now or wait?BUY

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

≈ $3/mo depreciation (model)waiting 3 months ≈ $0 cheaper (model)clears ≈ $650 (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 $245 under the all-condition fair bar. — fair $733 · 7 comps
Typical drift is −5%/yr (≈ $30 at today's value) — patience usually pays. — value model, curve fit on this product

What it has been selling for

monthly medians since 2026-01

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 · 177 obs

$442–$738
typically sells for: −5%/yr
value trend: 88%
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

Average7 comps: $733

own one? check what it's worth →

Same band, for less

measured comps

Heads rated to the same Ultra Game Improvement playability band, priced materially lower at fair — each fair on 5+ comps, each buyable today. Ranked by what you save, weighted by how well-measured the saving is. Nothing here is paid placement; there is none on this site.

TaylorMade M4 2021

fair $74/club · 6 comps6 live from $365

$31/club less at fair

Live listings

cheapest first · 8 live