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Live · checked today · 3 UK retailers tracked
Callaway BIG Bertha B21 Hybrid vs Cobra FLY XL Hybrid
Quick verdict
Checked daily across 3 UK retailers
Price and availability verdict
Callaway BIG Bertha B21 Hybrid is currently £84.95 used, while Cobra FLY XL Hybrid is currently £50.95 used. Against tracked history, Callaway BIG Bertha B21 Hybrid is at its lowest tracked price and Cobra FLY XL Hybrid is 28% above its lowest tracked price. Callaway BIG Bertha B21 Hybrid is currently available from 2 UK retailers, versus 3 for Cobra FLY XL Hybrid.
Deal intelligence
Should you buy now, or wait?
The Callaway BIG Bertha B21 Hybrid is at its lowest tracked price today. The Cobra FLY XL Hybrid has more room: its tracked low is £39.95.
Callaway · BIG Bertha B21 Hybrid
Not enough data yet
Today £84.95 · typical £97.45 · lowest £84.95
On sale 1 time in the last 3 months
Cobra · FLY XL Hybrid
Not enough data yet
Today £50.95 · typical £56.45 · lowest £39.95
On sale 2 times in the last 5 months
Head to head
Category leaders, from the data on this page
- Cheapest new FLY XL £50.95 vs £84.95
- Closest to its tracked low BIG Bertha B21 0% above vs 28%
- Most retailers in stock FLY XL 3 vs 2
- Cheapest used FLY XL from £50.95 vs £84.95
Specification differences
Published product specifications
| Specification | Callaway BIG Bertha B21 Hybrid | Cobra FLY XL Hybrid |
|---|---|---|
| Release year | 2021 | 2023 |
Where to buy
3 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 B21 Hybrid
↓ £35
since 13 April 2026
Lowest £84.95 on 18 August 2026
Cobra · FLY XL Hybrid
↓ £19
since 13 February 2026
Lowest £39.95 on 1 July 2026
New vs used
From used listings we track
Callaway · BIG Bertha B21 Hybrid
NEW £84.95
USED FROM £84.95
Cobra · FLY XL Hybrid
NEW £50.95
USED FROM £50.95
Availability by build
Which configurations are in stock right now
| Build | Callaway BIG Bertha B21 Hybrid | Cobra FLY XL Hybrid |
|---|---|---|
| Regular · 23° · Used | — | 2 retailers · from £50.95 at Replay Golf → |
| Regular · 19° · Left-hand · Used | 1 retailer · from £84.95 at Replay Golf → | — |
| Regular · 21° · Used | 1 retailer · from £89.99 at Nearly New Golf Clubs → | — |
| Regular · 23° · Left-hand · Used | — | 1 retailer · from £59.99 at Nearly New Golf Clubs → |
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Common questions about the Callaway BIG Bertha B21 Hybrid vs Cobra FLY XL Hybrid
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.