(Rainbow stops mid-tirade from Spike, listens and facepalms once realizing that Rarity had bought a LOT of things prior to being sent back.)

...How long do you think this'll take?! And how many flying Pokemon are gonna have to carry whatever Rarity's bought?

(She's pretty sure she can convince some of her Flying types to carry Rarity's things; she's tossing Charizard and Aerodactyl's Pokeballs for the time being.)