If you do however want to go retrofit but that price scares you away get on nasioc on the classifieds. There is always someone selling their set for $300-$600 used. But be careful most people do the retrofit themselves and the quality can suffer, not always though.
And just a reminder they WILL NOT be legal on the streets. Technically its all legal parts and they have no danger to passing drivers if done correctly but as they did not come on the car from Subaru it is considered illegal. This will be true for almost any(?) headlights other than the stock ones