For buyers who want a no-paint resin shed: 6 x 3 ft of resin for $536.08 ($29.78 per sq ft).
Amazon $524.73The Keter Factor 6x3 Shed rates 2.8 among small outdoor storage sheds; the Keter Darwin 6x8 Potting Shed rates 2.8 among medium ones. The Keter Factor 6x3 Shed costs $1,075.26 less ($524.73 vs $1,599.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

For buyers who want a no-paint resin shed: 6 x 8 ft of resin for $1,599.99 ($33.33 per sq ft).
Amazon $1,599.99Scores side by side
These two sit in different size classes (small and medium), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Keter Factor 6x3 Shed | Keter Darwin 6x8 Potting Shed |
|---|---|---|
| Overall rating | 2.8/5 | 2.8/5 |
| Value 35% | 22 $29.15 per sq ft, $4.77 per cu ft ($524.73) | 7 $33.33 per sq ft ($1,599.99) |
| Size 15% | 8 18 sq ft of floor | 51 48 sq ft of floor |
| Construction 20% | 85 steel-reinforced resin | 60 resin panels |
| Features 20% | 45 windows or skylights, vents | 45 windows or skylights, vents |
| Warranty 10% | 29 5-year warranty | 64 10-year warranty |
Specifications
| Keter Factor 6x3 Shed | Keter Darwin 6x8 Potting Shed | |
|---|---|---|
| Size | ||
| Footprint | 6 x 3 ft | 6 x 8 ft |
| Floor area | 18 sq ft | 48 sq ft |
| Capacity | 110 cu ft | - |
| Build | ||
| Material | Resin | Resin |
| Construction | Steel-reinforced resin | Resin panels |
| Doors and features | ||
| Double doors | - | Yes |
| Windows or skylights | Yes | Yes |
| Vents | Yes | Yes |
| Other | ||
| Warranty | 5 years | 10 years |