Terms of the previous offer
- The previous £839 figure was a local warehouse price and was not reverified in the latest check.
- Costco membership is required and online/warehouse prices can differ.
- The latest online page check showed £1,309.99, so compare against current public MacBook Air 15 pricing before buying.
Why the previous offer stood out
- £839 is excellent value for a new 15-inch MacBook Air with 16GB RAM and 512GB storage, especially because many lower MacBook Air prices are for 256GB models.
- The 15.3in Liquid Retina display and 1.51kg chassis make it a strong portable large-screen study, office and travel laptop.
- Costco is a credible UK retailer and the exact product page for the Midnight M4 16GB/512GB variant is live, even though the online price is much higher than the reported warehouse price.
Full specifications
| Brand | Apple |
|---|---|
| Model | MacBook Air 15 2025 M4 / Costco MacBookAir15M410CGPU16GB512GB |
| Processor brand | Apple |
| Processor | Apple M4 |
| Processor family | Apple M-series |
| NPU performance (TOPS) | Not confirmed |
| Memory (GB) | 16 |
| Ram type | Unified memory |
| Storage (GB) | 512 |
| Storage type | SSD |
| Gpu brand | Apple |
| Graphics | Apple M4 integrated 10-core GPU |
| Gpu type | integrated |
| Graphics memory (GB) | Not confirmed |
| GPU power (W) | Not confirmed |
| Screen size (inches) | 15.3 |
| Resolution | 2880x1864 |
| Screen type | Liquid Retina IPS |
| Screen finish | glossy |
| Refresh rate (Hz) | 60 |
| Brightness (nits) | 500 |
| Colour gamut | P3 wide colour |
| Weight (kg) | 1.51 |
| Operating system | macOS |
| Keyboard layout | UK assumed from Costco UK listing context; confirm at warehouse purchase |
| Charger included | Yes |
Condition, warranty and price evidence
- Condition
- New
- Warranty
- Costco product page links to concierge technical support and 90-day returns information; Apple one-year limited warranty is expected, but confirm Costco and Apple cover at purchase.
- Eligibility
- The £839 figure is a reported Coventry warehouse price, not the online Costco page price; local warehouse prices can vary and the online page showed a much higher starting price before checkout reduction.
- Recorded availability
- Costco online page rechecked on 2026-07-08: matching 15-inch M4 16GB/512GB product showed in stock online at £1,309.99. The previous £839 Coventry warehouse price was not reverified.
- Price recorded
These notes describe retailer listings and recorded checks. They are not a hands-on review or a guarantee of stock. How we check prices.