Trials shoes like the monty and ribo are expensive, £65+, im not entirely sure what size they go up to but im almost certain they dont go up to 14-15 :P . However i can say Vans skateshoes, are hard wearing, good grip and look good and i know you can get them in quite big sizes, because someone i use to know had size 13 feet i think and he wore lots of vans shoes. Also vans shoes arnt that expensive so try searching for some of them. :P :P Hope i helped. Jules