If it helps, the devs know that players want to be able to buy account wide mounts and social gear and pets and bags...and its supposably still under consideration.
Right now, the only account wide things you can buy are some of the social armors that I know of. So your best bet is to wait for a subscription offer that gives you what you want.
The camel one was part of the 'deluxe' turan pack, for example. The first mount offer was the white tiger for an annual. At one point I was about 2 plus years paid in advance for my account.