World Teleporter -> Public Moongates -> Britain. Look for Erin at the Britain Gate Shop.
500 - 3000 gold. 400 - 1200 ability points spent. Levels up to level 42, already trained to the best breeding level. All can be bred at least once more.
Ridable Pack Llamas are non-casting mounts with a backpack that can hold 1000+ stone of weight. They consume only 1 control slot (other ridable pack beasts except mules consume 2 or more) and unlike Beetles they don't have wasted points in int and mana which make late-stage breeding hard.
Take down dragons with ease and ride away abandoning none of the loot. Ridable pack llamas at the Old Britain Moongate.