One of these poles is not like the others

6 x 8" (150x200mm) Mounted Print - $59 8 x 12" (200x300mm) Mounted Print - $89 12 x 18" (300x450mm) Archival Print - $290 16 x 24" (400x600mm) Archival Print - $380 20 x 30" (500x750mm) Archival Print - $490 24 x 36" (600x900mm) Archival Print - $640 8 x 12" (200x300mm) Alu-Mount Ready To Hang - $210 12 x 18" (300x450mm) Alu-Mount Ready To Hang - $360 16 x 24" (400x600mm) Alu-Mount Ready To Hang - $520 20 x 30" (500x750mm) Alu-Mount Ready To Hang - $760 24 x 36" (600x900mm) Alu-Mount Ready To Hang - $960 12 x 18" (300x450mm) Archival Print with Cove Frame - $720 16 x 24" (400x600mm) Archival Print with Cove Frame - $960 20 x 30" (500 x750mm) Archival Print with Cove Frame - $1,260 24 x 36" (600x900mm) Archival Print with Cove Frame - $1,520 700 x 700mm Archival Print Only (Limited Edition) - $1,200 700 x 700mm Archival Print with Natural Box Frame - $1,500 1 x 1m Archival Print Only (Limited Edition) - $2,000 1 x 1m Archival Print with Natural Box Frame - $2,500 800 x 1200mm Archival Print Only (Limited Edition) - $2,000 800 x 1200mm Archival Print with Natural Box Frame - $2,500 800 x 1200mm Premium Acrylic - $3,500