My first time buying from Rakuten and it was better than I expected! Bought: White Jacket, Zara-inspired, for less than $30. Used Paypal and it arrived within 3 days.
My only comment is that the site is super cluttered/busy, has way too many products on display and is eye-hurting at times! It's hard to find what you're after unless you use the search function which isn't perfect either as it displays some irrelevant results.
I was happy with my jacket though, looked as it did in the site and the seller had packed it quite nicely.
FYI, Rakuten offers a 45-day return policy and Free Shipping for order > $60.