Compare / iron set
Live · checked today · 5 UK retailers tracked
Callaway Apex 21 Iron Set (2021) vs Srixon ZX4 MK II Iron Set
Quick verdict
Checked daily across 5 UK retailers
Price and availability verdict
Callaway Apex 21 Iron Set (2021) is currently £399.99 used, while Srixon ZX4 MK II Iron Set is currently £549.99 used. Against tracked history, Callaway Apex 21 Iron Set (2021) is at its lowest tracked price and Srixon ZX4 MK II Iron Set is 269% above its lowest tracked price. Callaway Apex 21 Iron Set (2021) is currently available from 3 UK retailers, versus 4 for Srixon ZX4 MK II Iron Set.
Callaway
Apex 21 Iron Set (2021)
£399.99 used No change around usual Buy £399.99 → at Nearly New Golf ClubsDeal intelligence
Should you buy now, or wait?
The Callaway Apex 21 Iron Set (2021) is at its lowest tracked price today. The Srixon ZX4 MK II Iron Set has more room: its tracked low is £149.
Callaway · Apex 21 Iron Set (2021)
Not enough data yet
Today £499.95 · usual £499.95 · lowest £499.95
Srixon · ZX4 MK II Iron Set
Not enough data yet
Today £549.99 · usual £749 · lowest £149
On sale 3 times in the last 4 months
Head to head
Category leaders, from the data on this page
- Cheapest new Apex 21 Iron Set (2021) £399.99 vs £549.99
- Closest to its tracked low Apex 21 Iron Set (2021) 0% above vs 269%
- Most retailers in stock ZX4 MK II 4 vs 3
- Cheapest used Apex 21 Iron Set (2021) from £399.99 vs £549.99
Where to buy
5 UK retailers, checked daily
Price trajectory
How each has moved since we started tracking
Lowest tracked price per day, any condition. Caddence tracks both daily. Shaded spans are days we couldn’t collect prices — the lines break rather than guessing.
Srixon · ZX4 MK II Iron Set
↓ £199.01
since 21 February 2026
Lowest £149 on 3 April 2026
New vs used
From used listings we track
Callaway · Apex 21 Iron Set (2021)
NEW £399.99
USED FROM £399.99
Srixon · ZX4 MK II Iron Set
NEW £549.99
USED FROM £549.99
Availability by build
Which configurations are in stock right now
| Build | Callaway Apex 21 Iron Set (2021) | Srixon ZX4 MK II Iron Set |
|---|---|---|
| Regular · Used | 2 retailers · from £399.99 at Nearly New Golf Clubs → | 4 retailers · from £549.99 at Scottsdale Golf → |
| Stiff · Used | 2 retailers · from £459.99 at Golf Clubs 4 Cash → | 1 retailer · from £749.99 at Nearly New Golf Clubs → |
Waiting for a better price?
Set a free alert and we’ll email you when either drops to your target.
Related iron set comparisons
More head-to-head price checks
Common questions about the Callaway Apex 21 Iron Set (2021) vs Srixon ZX4 MK II Iron Set
Prices shown are the cheapest in-stock price per retailer tracked by Caddence, updated daily. Always confirm the final price on the retailer's site.