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Live · checked today · 5 UK retailers tracked
Callaway BIG Bertha OS Hybrid vs Cobra Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85
Quick verdict
Checked daily across 5 UK retailers
Price and availability verdict
Callaway BIG Bertha OS Hybrid is currently £67.95 used, while Cobra Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85 is currently £84.95 used. Against tracked history, Callaway BIG Bertha OS Hybrid is at its lowest tracked price and Cobra Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85 is at its lowest tracked price. Callaway BIG Bertha OS Hybrid is currently available from 2 UK retailers, versus 4 for Cobra Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85.
Cobra
Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85
£84.95 used No change at its low Buy £84.95 → at Affordable GolfCobra
Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85
£84.95 used
at Affordable Golf
Deal intelligence
Should you buy now, or wait?
Both are at their lowest tracked prices today.
Callaway · BIG Bertha OS Hybrid
Not enough data yet
Today £67.95 · typical £99.95 · lowest £67.95
On sale 1 time in the last 3 months
Cobra · Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85
Not enough data yet
Today £84.95 · typical £99.95 · lowest £84.95
On sale 1 time in the last 5 months
Head to head
Category leaders, from the data on this page
- Cheapest new BIG Bertha OS £67.95 vs £84.95
- Most retailers in stock Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85 4 vs 2
- Cheapest used BIG Bertha OS from £67.95 vs £84.95
Specification differences
Published product specifications
| Specification | Callaway BIG Bertha OS Hybrid | Cobra Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85 |
|---|---|---|
| Release year | 2025 | 2021 |
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.
Callaway · BIG Bertha OS Hybrid
↓ £32
since 9 April 2026
Lowest £67.95 on 18 August 2026
Cobra · Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85
↓ £34.05
since 13 February 2026
Lowest £84.95 on 3 June 2026
New vs used
From used listings we track
Callaway · BIG Bertha OS Hybrid
NEW £67.95
USED FROM £67.95
Cobra · Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85
NEW £84.95
USED FROM £84.95
Availability by build
Which configurations are in stock right now
| Build | Callaway BIG Bertha OS Hybrid | Cobra Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85 |
|---|---|---|
| Regular · 25° · Used | 1 retailer · from £74.99 at The Second Hand Golf Shop → | — |
| Stiff · 19° · Left-hand · Used | 1 retailer · from £67.95 at Replay Golf → | 1 retailer · from £89.95 at Replay Golf → |
| Regular · 19° · Used | — | 1 retailer · from £89.99 at Nearly New Golf Clubs → |
| Regular · Used | — | 1 retailer · from £84.95 at Affordable Golf → |
| Stiff · 19° · Used | — | 1 retailer · from £119 at Preowned Golf → |
| Stiff · Used | — | 1 retailer · from £104.95 at Affordable Golf → |
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Common questions about the Callaway BIG Bertha OS Hybrid vs Cobra Aerojet Graphite Right Hand 4 Hybrid 21* Stiff - KBS 85
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.