In short: Used 2021 Titleist T100S irons are worth about $576, our target price, checked Oct 31, 2026. $489 or less is a great buy and anything up to $576 is a good buy; over $642 it’s overpriced. New, a set goes for about $1,054, so buying used saves about 45%. The set costs less than 54% of the 204 used iron sets we’ve priced; the typical one is about $590.
What to pay for used 2021 Titleist T100S irons
$489 or less
15% or more under the target.
$490–$576
At or under the target.
Over $642
$577–$642 is a fair price; offer near $576.
Count the shipping. Hold the landed price, the club plus shipping, up against these numbers.
Selling one? List it at or just under the target, $576, and it should move fast. How to price and list a used club
Model guide: Titleist T-series irons by year, and what each is worth used
Buying guide: The best used irons to buy in 2026
Target price history
Down 3% since Sep 24, 2026, from $594 to $576.
| Checked | Used target |
|---|---|
| Oct 31, 2026 | $576 |
| Sep 24, 2026 | $594 |
The 2021 against other years of the Titleist T100S irons
Used, the 2021 has a target of $576. The 2019 is $40 (7%) less.
| Model year | Used target | vs 2021 |
|---|---|---|
| 2021 (this page) | $576 | — |
| 2019 | $536 | −$40 |
Other Titleist iron sets, priced
| Club | Year | Used target | vs this one |
|---|---|---|---|
| Titleist T100 iron set | 2023 | $734 | +$158 |
| Titleist T150 Black iron set | 2023 | $879 | +$303 |
| Titleist T100 iron set | 2021 | $611 | +$35 |
| Titleist T200 iron set | 2021 | $645 | +$69 |
| Titleist T300 iron set | 2021 | $573 | −$3 |
| Titleist 620 MB iron set | 2020 | $695 | +$119 |
| Titleist T400 iron set | 2020 | $602 | +$26 |
| Titleist T100 iron set | 2019 | $499 | −$77 |
More to check
- T250 Black Vapor iron set2026
- T350 Black Vapor iron set2026
- T100 Oil Can iron set2025
- T250* Launch Spec iron set2025
- 718 AP1 iron set2018
- 718 AP3 iron set2018
- AP2 716 Forged iron set2017
- CB 716 Forged iron set2017
Other brands at about the same price
Used iron sets from other brands with targets within 20% of this one, from model years 2019–2023.
| Club | Year | Used target | vs this one |
|---|---|---|---|
| Ping i210 iron set | — | $586 | +$10 |
| Srixon ZX7 iron set | — | $585 | +$9 |
| PXG 0311 P GEN4 iron set | — | $576 | same |
| Mizuno JPX 921 Forged iron set | — | $576 | same |
| Callaway Apex Pro iron set | 2021 | $574 | −$2 |
| Cobra King Forged Tec X Black iron set | 2023 | $571 | −$5 |
Specs to match
- Model year
- 2021
- Type
- Iron set
Count the clubs (4–PW, 5–PW, with or without a gap wedge), check the shaft (steel or graphite, and the flex) and confirm the model year. Look at the grooves on the short irons; they wear first.
Questions
How much are used 2021 T100S irons worth?
Used 2021 Titleist T100S irons are worth about $576: that’s our algorithm’s target price, checked Oct 31, 2026. Under that is a good buy; over it, make an offer near the target or keep looking.
What’s a good price for used 2021 Titleist T100S irons?
Anything at or under $576 is a good buy, and $489 or less is a great one. Over $642 is overpriced. Those lines come from our algorithm’s target price, checked Oct 31, 2026; hold them up against the price plus shipping.
What should I list my used 2021 T100S irons for?
At or just under the target, $576. That’s roughly what buyers pay for one, so it should sell quickly; list it well above and expect offers near the target.
How much cheaper are used 2021 Titleist T100S irons than new?
The used target is about 45% under the going price for a new one.
Where can I buy used 2021 Titleist T100S irons?
When we last checked there were 40 live options near the target, from $360 with shipping included. ClubChecks lists every one, cheapest first, and tags each as under or over the target.
Is the price of used 2021 Titleist T100S irons going up or down?
Down 3% since Sep 24, 2026, from $594 to $576. That’s our algorithm’s target price, which it checks again regularly.
What’s the price difference between the 2021 and 2019 Titleist T100S irons?
Used, the 2019 has a target of $536 and the 2021 $576, so the 2019 is $40 (7%) less. Both are our algorithm’s target prices, checked Oct 24, 2026 and Oct 31, 2026.
What should I check before buying a used iron set?
Count the clubs (4–PW, 5–PW, with or without a gap wedge), check the shaft (steel or graphite, and the flex) and confirm the model year. Look at the grooves on the short irons; they wear first.