canonical product
Titleist TSi4 2021
Driver
- 65
- live listings · 5 retailers
- $137–$517
- asking range
- $223
- fair, all conditions · 63 comps
buy now or wait?BUY
The value curve is flat — waiting buys you almost nothing.
≈ $1/mo depreciation (model)
days-on-market is measured, but organic clears are a small slice of this product's churn — weigh the velocity accordingly.
forecast: product evidence · verdict recomputed nightly
The verdict
each line cites its basis- Buy window: the cheapest live copy sits $86 under the all-condition fair bar. — fair $223 · 63 comps
What it has been selling for
monthly medians since 2026-01Value over time
value model, curve fit on this product · 142 obs- $170–$285
- typically sells for
- −3%/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
- Average41 comps
- $230
- Above Average10 comps
- $224
- Below Average11 comps
- $173
Same band, for less
measured compsThe same club type, 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.
Mizuno ST G 2025
fair $154 · 75 comps80 live from $112
PXG 0811 GEN4 X 2021
fair $149 · 54 comps62 live from $91
PXG 0211 2021
fair $130 · 23 comps28 live from $104
PXG 0811 Gen2 X 2018
fair $130 · 15 comps15 live from $95
XXIO X 2022
fair $150 · 33 comps33 live from $103
Live listings
cheapest first · 65 liveTitleist TSi4 Driver 9° PX HZRDUS Smoke Yellow 60 Graphite Stiff Right Handed 45.5in
Below AverageStiff2nd Swing
Titleist TSi4 Driver 9° Project X HZRDUS Smoke Black RDX 60 Graphite Stiff Right Handed 44.5in
Below AverageStiff2nd Swing
Titleist TSi4 Driver 9° Project X HZRDUS Smoke Yellow 60 Graphite Stiff Right Handed 45.5in
Below AverageStiff2nd Swing
Titleist TSi4 Driver 9° UST Mamiya ProForce V2 6 Graphite Stiff Right Handed 45.25in
Below AverageStiff2nd Swing
Titleist TSi4 Driver 9° Accra FX-250 Graphite Stiff Left Handed 44.5in
Below AverageStiffLH2nd Swing
Used Titleist TSi4 Driver - HEAD ONLY - Right-Handed - 9 Degrees
ExcellentNext Round Golf
Titleist TSi4 Driver 9° Mitsubishi Tensei AV Blue SFW 55 Graphite Regular Right Handed 45.75in
Below AverageRegular2nd Swing
Titleist TSi4 Driver 9° Mitsubishi Tensei AV White Raw 65 Graphite Stiff Right Handed 45.75in
AverageStiff2nd Swing
Titleist TSi4 Driver 10° Graphite Design Tour AD TP-4 Graphite Senior Right Handed 45.5in
Below AverageSenior2nd Swing
Titleist TSi4 Driver
Below AverageExtra StiffGolf Avenue
Titleist TSi4 Driver
AverageStiffGolf Avenue
Titleist TSi4 Driver 9° Project X HZRDUS Smoke Red RDX 60 Graphite Stiff Right Handed 46.0in
AverageStiff2nd Swing
Titleist TSi4 Driver 9° Project X 5.5 Graphite Graphite Regular Right Handed 43.5in
AverageRegular2nd Swing
Titleist Tsi4 10° Driver Stiff Flex Aldila Rogue Max 65 13687321 Fair
Above AverageStiffMike's Golf Outlet
Titleist TSi4 Driver
AverageStiffGolf Avenue
Titleist TSi4 Driver
AverageStiffGolf Avenue
Titleist TSi4 Driver
AverageStiffGolf Avenue
Titleist TSi4 Driver
AverageStiffGolf Avenue
Titleist TSi4 Driver
AverageExtra StiffGolf Avenue
Titleist TSi4 Driver
AverageStiffGolf Avenue
Titleist TSi4 Driver 9° Diamana S+ 60 Limited Edition Graphite X-Stiff Left Handed 46.0in
AverageExtra StiffLH2nd Swing
Titleist TSi4 Driver 10° Diamana S+ 60 Limited Edition Graphite Stiff Right Handed 46.0in
AverageStiff2nd Swing
Titleist TSi4 Driver
AverageRegularGolf Avenue
Titleist TSi4 Driver
AverageRegularGolf Avenue
Titleist TSi4 Driver
AverageStiffGolf Avenue
Titleist TSi4 Driver
AverageStiffGolf Avenue
Titleist TSi4 Driver
AverageStiffGolf Avenue
Titleist TSi4 Driver 9° Graphite Design Tour AD GP-5 Teal Graphite Senior Right Handed 45.0in
AverageSenior2nd Swing
Titleist TSi4 Driver 9° Mitsubishi Kuro Kage Black DC 50 Graphite Stiff Right Handed 44.5in
AverageStiff2nd Swing
Titleist TSi4 Driver 10° Grafalloy ProLite Graphite Stiff Right Handed 45.5in
AverageStiff2nd Swing