What is the best website to buy a neru akita cosplay from?

im saving up for a neru akita cosplay and wig for anime expo in july 1-4 im gonna be rin and neru ( i hav a rin cosplay already) im gonna get a summer job at our local dount shop, my friend works there and hes 13 too. whats the best sit to get one off of with fast shipping cause anime expo is almost here guys!