I'm sure this has been asked countless times on this forum but...
Say I want an alliance quest item but I'm playing on Horde. If I faction change, get the item, and then refund the faction change, will I still have the item from the faction specific quest?
So let me get this straight - in another thread on this forum people are petitioning players to spam the Twitter accounts of game developers to complain about 19s not getting skirmishes despite being paying, loyal customers, and in this one people are talking about ways to cheat Blizzard out of money and scam the system to get items they're not entitled to for free?
dat cognitive dissonance ¯\_(ツ)_/¯
Don't try to 'trick the system.' The vast majority of cases where someone successfully did something they aren't supposed to be able to do, are either lying or had special circumstances pertaining to why they were able to do what they did.
If you want a specific item from both factions, you should start on the faction you don't intend to play and then just faction change to the correct faction once you're ready. Asking for a refund is an incredibly stupid way to go about it because there's no telling how your character/account will end up. You wanted the item from both factions, suck it up and pay for a faction change.