I spent less than 150$ for everything. Also everything was from a Subaru dealer.
9 quarts of factory ATF 73$
1 rear main seal 13$
1 oil block plate 37$
5 new bolts for oil plate 4$
1 quart of gear oil for front diff 5$ ( at part store )
Some thing like that for me. Give or take on prices for everything.
Also I forgot to ask how about your oil pan did you check that? If it is that look up beergarage.com and look up Subaru oil pan.
It tells you how to do it easyer with out having to drop your subframe.
I live in Cali idk what the prices are out where you live. Sooooo that being said prices may very for you if your not in Cali.