Compare / driver
Live · checked today · 3 UK retailers tracked
Callaway B21 Driver vs Cobra Fly-Z Driver
Quick verdict
Checked daily across 3 UK retailers
Price and availability verdict
Callaway B21 Driver is currently £169.95 used, while Cobra Fly-Z Driver is currently £64.95 used. Against tracked history, Callaway B21 Driver is at its lowest tracked price and Cobra Fly-Z Driver is at its lowest tracked price. Callaway B21 Driver is currently available from 1 UK retailer, versus 2 for Cobra Fly-Z Driver.
Deal intelligence
Should you buy now, or wait?
Both are at their lowest tracked prices today.
Callaway · B21 Driver
Not enough data yet
Today £169.95 · typical £199.95 · lowest £169.95
On sale 1 time in the last 3 months
Cobra · Fly-Z Driver
Not enough data yet
Today £64.95 · typical £104.95 · lowest £64.95
On sale 4 times in the last 2 months
Head to head
Category leaders, from the data on this page
- Cheapest new Fly-Z £64.95 vs £169.95
- Most retailers in stock Fly-Z 2 vs 1
- Cheapest used Fly-Z from £64.95 vs £169.95
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 · B21 Driver
↓ £30
since 9 April 2026
Lowest £169.95 on 18 August 2026
Cobra · Fly-Z Driver
↓ £45.04
since 9 April 2026
Lowest £64.95 on 1 August 2026
New vs used
From used listings we track
Callaway · B21 Driver
NEW £169.95
USED FROM £169.95
Cobra · Fly-Z Driver
NEW £64.95
USED FROM £64.95
Availability by build
Which configurations are in stock right now
| Build | Callaway B21 Driver | Cobra Fly-Z Driver |
|---|---|---|
| Regular · 9° · Left-hand · Used | 1 retailer · from £169.95 at Replay Golf → | — |
| Regular · 11.5° · Used | — | 1 retailer · from £89.99 at Nearly New Golf Clubs → |
| Stiff · 9.5° · Used | — | 1 retailer · from £64.95 at Affordable Golf → |
Waiting for a better price?
Set a free alert and we’ll email you when either drops to your target.
Related driver comparisons
More head-to-head price checks
Common questions about the Callaway B21 Driver vs Cobra Fly-Z Driver
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.