It's way too expensive but thats rly the beauty of it
op's/jsk's - for baby/AP, if a dress is set at 350$ i think a good 50$-60$ of your price IS going to be because its got their brand name attached, but that is justifiable. for meta/IW (the only other two ive had experience with) their pieces are unlined, usually involve less overall construction, so 200$ is only going to add an additional 20$-30$ to go towards the brand name. indie/taobao brands are usually about 60$-150$ and some of the higher priced ones are at about the same construction as meta/IW but without the brand name
socks - for big names theyres going to be a little extra cost but 5-10$ is usually not that big of a deal, a good pair of socks is always going to be atleast 25-35$, tights u can probably get away with cheaper
shoes - the day i fit into anything other then bodyline and indie shoes is the day god rises, shoes are always going to be expensive tho, brand name or not, vivian westwood is a good example of how a brand name increases price exponentially
jewelry/blouses - this is the one place where i do think some of the brand prices are unjustifiable. AP jewelry is just so expensive and its rly just b/c its AP. blouses i feel the same way about, im never really going to pay more then 65$-75$ for a blouse, with 35$-55$ being my prefered price range. brand blouses that go for 100$+ are just so ridiculous to me.
head pieces/hats - no complaints here, everythings p much as expensive as expected, sometimes im mad that a headpiece is 40$, but considering its a brand name headpiece it makes sense