quick qestion if 1 is doing the special Blizzard is running on transfering becauseit looks deceaving willit go from allaince to horde or will it stay the same?
If you’re talking about the 30% off Faction Change special, then yes that’s what it does - let you change from alliance to horde or vice versa. You stay the same class, so you’re limited to races that can be that class; if this Human priest is the one you want to change to Horde, that would exclude Orcs & Highmountain Tauren.
On the other hand, if you’re talking about the Character Transfer special, that doesn’t include a faction change. All you get with that is the ability to move your character to another server but your character stays the same.
So if a faction change is what you’re looking for, make sure that’s what you buy. You should read the support document on faction changes to get familiar with the requirements & limitations before spending your money.