Large unseasoned carbon steel pan. Potentially good for cooking outdoors or on a BBQ. You can find instructions online on how to season a carbon steel pan pretty easily.
They also have 32.5cm pan: Vogue Carbon Steel Paella Pan 325mm for $3.33 (92% off)
Made from highly quality, ultra-strong carbon steel, the Vogue 400mm paella pan has been expertly designed to help you create large quantities of delicious paella. With the distinctive paella shape and size, the pan provides you with plenty of capacity for a large events, whilst the strong commercial construction gives you the reassurance that it's built to last. The carbon steel material ensures even heat distribution throughout the base of the pan, preventing hotspots which could lead to food waste. For best results, this pan should be seasoned before use.
Dimensions 73(H) x 400(Ø)mm
Material Carbon Steel
Even heat distribution across the whole pan surface
Strong metal handles
Can be hung from handles or stacked for easy storage
Even heat distribution
Excellent energy efficiency
Please note: not dishwasher safe