Vaello Campos 40 cm Polished Steel Paella Pan. Traditional, Easy to Clean. 2.2 lbs, 11.81" x 15.75" x 11.81".
 
Very highly reviewed on Amazon, where it sold out at $29.99 each.
 
https://www.amazon.co.uk/Vaello-Campos-Valenciana-Polished-Paella/dp/B0050OMK3Q