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Live · checked today · 5 UK retailers tracked
Callaway Apex 21 Iron Set (2021) vs Mizuno PRO S-1 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 Mizuno PRO S-1 Iron Set is currently £899.99 used. Deal scores are Mizuno PRO S-1 Iron Set 51/100; against tracked history, Callaway Apex 21 Iron Set (2021) is around its typical price and Mizuno PRO S-1 Iron Set is 9% above its lowest tracked price. Callaway Apex 21 Iron Set (2021) is currently available from 2 UK retailers, versus 4 for Mizuno PRO S-1 Iron Set.
Callaway
Callaway Apex 21 Iron Set (2021)
from £399.99
at Mega Golf · 2 retailers
Lowest £350 · around its usual price
Mizuno
Mizuno PRO S-1 Iron Set
from £899.99
at Mega Golf · 4 retailers
Lowest £900 · lowest price we’ve seen
Discount vs RRP
Price vs usual
Where to buy
Callaway Apex 21 Iron Set (2021)
Where to buy
Mizuno PRO S-1 Iron Set
Deal intelligence
Should you buy now, or wait?
Callaway · Apex 21 Iron Set (2021)
Not enough data yet
Mizuno · PRO S-1 Iron Set
Fair price today
Today £1,079 · typical £1,079 · lowest £989
On sale 1 time in the last 5 months
Head to head
Category leaders, from the data on this page
- Cheapest new Apex 21 Iron Set (2021) £399.99 vs £1,079
- Most retailers in stock PRO S-1 4 vs 2
- Cheapest used Apex 21 Iron Set (2021) from £399.99 vs £899.99
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.
Mizuno · PRO S-1 Iron Set
No change
since 21 February 2026
Lowest £989 on 26 July 2026
New vs used
From used listings we track
Callaway · Apex 21 Iron Set (2021)
NEW £399.99
USED FROM £399.99
Mizuno · PRO S-1 Iron Set
NEW £1,079
USED FROM £899.99
Used prices average 83% of new · 1 used listing tracked
Availability by build
Which configurations are in stock right now
| Build | Callaway Apex 21 Iron Set (2021) | Mizuno PRO S-1 Iron Set |
|---|---|---|
| Stiff | — | 3 retailers · from £1,079 at Golf Gear Direct → |
| Regular · Used | 1 retailer · from £399.99 at Nearly New Golf Clubs → | — |
| Stiff · Used | 1 retailer · from £399.99 at Mega Golf → | — |
| Extra Stiff · Used | — | 1 retailer · from £899.99 at Mega Golf → |
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Common questions about the Callaway Apex 21 Iron Set (2021) vs Mizuno PRO S-1 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.