Once we agree upon a price, I will allow you to take one of your guildless toons (or create one :P) and invite you to my bank alts guild so you can see that everything you need is there at your disposal. Once payment is received, I will allow you full access to the bank tabs, in which you can either take the mats out and mail them to your leatherworking toon, or stay in guild until you reach 525.
With all my kits I do offer, for free, to disenchant anything you make with the kit that you don't want to or cannot sell in the auction house. You can just leave the items in the guildbank or send them directly to this character.
As MoP approaches prices are rising due to a major surge in demand and a big reduction in supply. If you're looking to minimize costs, this isn't the service for you. If you're after a quick and painless leveling experience, this is your best option.
I am also currently working on Enchanting, Jewelcrafting, Blacksmithing, and more Leatherworking/Tailoring kits. If you are interested in any of those, I can rush along putting whichever you need together faster.
I am able to transfer these kits to alliance as long as you can cover the 10% cost to send the gold back to horde.
Thanks for looking! :)