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Live · checked today · 3 UK retailers tracked
Callaway BIG Bertha B21 Hybrid vs XXIO X Hybrid — Generation Unknown
Quick verdict
Checked daily across 3 UK retailers
Price and availability verdict
Callaway BIG Bertha B21 Hybrid is currently £89.99 used, while XXIO X Hybrid — Generation Unknown is currently £99.95 used. against tracked history, Callaway BIG Bertha B21 Hybrid is 11% above its lowest tracked price and XXIO X Hybrid — Generation Unknown is 25% above its lowest tracked price. Both are currently available from 2 UK retailers.
Callaway
BIG Bertha B21 Hybrid
£89.99 used ↑ £10 23% below usual Buy £89.99 → at Nearly New Golf ClubsXXIO
X Hybrid — Generation Unknown
£99.95 used No change 25% below usual Buy £99.95 → at Affordable GolfCallaway
BIG Bertha B21 Hybrid
£89.99 used
↑ £10 7 days
23% below usualat Nearly New Golf Clubs
Deal intelligence
Should you buy now, or wait?
Neither is at its low today. The Callaway BIG Bertha B21 Hybrid is closest, within 11% of its lowest tracked price. The XXIO X Hybrid — Generation Unknown has more room: its tracked low is £79.95.
Callaway · BIG Bertha B21 Hybrid
Not enough data yet
Today £99.95 · typical £99.95 · lowest £89.95
On sale 1 time in the last 3 months
XXIO · X Hybrid — Generation Unknown
Not enough data yet
Today £99.95 · typical £99.95 · lowest £79.95
On sale 1 time in the last 3 months
Head to head
Category leaders, from the data on this page
- Cheapest new BIG Bertha B21 £89.99 vs £99.95
- Closest to its tracked low BIG Bertha B21 11% above vs 25%
- Cheapest used BIG Bertha B21 from £89.99 vs £99.95
Specification differences
Published product specifications
| Specification | Callaway BIG Bertha B21 Hybrid | XXIO X Hybrid — Generation Unknown |
|---|---|---|
| Release year | 2021 | 2020 |
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
↓ £59.05
since 13 February 2026
Lowest £89.95 on 11 May 2026
XXIO · X Hybrid — Generation Unknown
↓ £50
since 9 April 2026
Lowest £79.95 on 3 June 2026
New vs used
From used listings we track
Callaway · BIG Bertha B21 Hybrid
NEW £89.99
USED FROM £89.99
XXIO · X Hybrid — Generation Unknown
NEW £99.95
USED FROM £99.95
Availability by build
Which configurations are in stock right now
| Build | Callaway BIG Bertha B21 Hybrid | XXIO X Hybrid — Generation Unknown |
|---|---|---|
| Regular · 21° · Used | 1 retailer · from £89.99 at Nearly New Golf Clubs → | — |
| 19° · Left-hand · Used | 1 retailer · from £99.95 at Replay Golf → | — |
| 20° · Used | — | 1 retailer · from £149.95 at Replay Golf → |
| Used | — | 1 retailer · from £99.95 at Affordable Golf → |
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Common questions about the Callaway BIG Bertha B21 Hybrid vs XXIO X Hybrid — Generation Unknown
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.